Both Chief Justice Roberts' majority opinion and Justice Jackson's concurrence drew heavily on arguments and sources that historians @marthasjones.bsky.social and @katemasur.bsky.social presented to the Court in an amicus brief. www.brennancenter.org/media/15301/...
Kate Masur
@katemasur.bsky.social
Historian and whatnot. Recently published FREEDOM WAS IN SIGHT! A GRAPHIC HISTORY OF RECONSTRUCTION IN THE WASHINGTON, D.C. REGION, with illustrations by the remarkable Liz Clarke. See also katemasur.com.
In @slate.com, Reva Siegel examines how SCOTUS's birthright citizenship opinion shows how people outside the courts have long shaped the Constitution. She spotlights a key development: for the first time, the Court recognized Frederick Douglass as a framer. Historians helped the Court get there 🧵⬇️
The Supreme Court’s Biggest Case of the Term Shows Popular Constitutionalism in Action
The birthright citizenship case the Supreme Court just decided demonstrates how deep-rooted this practice is.
slate.com
Freedom Was in Sight! This book by Professor Kate Masur and artist Liz Clarke is a graphic history of Reconstruction in Washington, DC. Professor Masur writes, "When we place the enormous significance of slavery's destruction at the center of Reconstruction history, it makes sense to alter our…
Freedom Was in Sight!
This book by Professor Kate Masur and artist Liz Clarke is a graphic history of Reconstruction in Washington, DC. Professor Masur writes, "When we place the enormous significance of slavery's destruction at the center of Reconstruction history, it makes sense to alter our understanding of when the period began and ended. Instead of starting in the spring of 1865, when Confederate generals surrendered to their U.S. Army counterparts, we begin with the onset of the Civil War in 1861, when soldiers of the U.S. Army entered the slave states and enslaved people began escaping toward U.S.
studycivilwar2.wordpress.com
SCOTUS opinions can be baffling and inaccessible, but if there is something, anything people should read about birthright citizenship, it is the amicus brief of Martha S. Jones & Kate Masur. If it doesn't make you believe in the power of change & the good possible in the Constitution, nothing will.
supremecourt.gov
With so many others I'm relieved that SCOTUS upheld birthright citizenship. And yes, it shouldn't have been this close. Please, everyone, read Justice Jackson, who gives a particularly forthright account of the relevant history and emphasizes the stakes for this country.
really cannot be emphasized enough that the drafters of the birthright clause very much considered cases analogous to undocumented immigrants and *included them too*
That's right.
With so many others I'm relieved that SCOTUS upheld birthright citizenship. And yes, it shouldn't have been this close. Please, everyone, read Justice Jackson, who gives a particularly forthright account of the relevant history and emphasizes the stakes for this country.
This week's #HearThis is a short explainer for Canadian readers who have wondered: What exactly is Juneteenth? And why has it been celebrated by Black Americans for generations? h/t @blowthestack.bsky.social @katemasur.bsky.social @nytimes.com open.substack.com/pub/fastfive...
"I’ve heard about Juneteenth. Why is it such a big deal?"
Why we celebrate the end of slavery on Juneteenth By Sydney Combs National Geographic June 16, 2026 Photograph by Callaghan O’Hare, Reuters
open.substack.com
#TeachReconstruction uncpress.org/freedom-was-... Great way to finish out the year! @katemasur.bsky.social
Freedom Was In Sight! Teaching Materials
Welcome to the teaching resources page for Freedom Was In Sight! A Graphic History of Reconstruction in the Washington, D.C., Region. These resources were
uncpress.org
Historian @katemasur.bsky.social on the Trump admin's attacks on birthright citizenship: "Efforts to undermine birthright citizenship" are "almost always highly political and driven by anti-immigrant sentiment, not by any legitimate understanding of the 14th Amendment." (For more on Kate's work ⬇️)
Historian Fact-Checks President Trump’s Birthright Citizenship Order as Supreme Court Weighs Case
YouTube video by CBS Chicago
youtube.com
Just so everyone knows, the Solicitor General straight up lied about the 1921 law review article he kept talking about. quick thread:
Relevant today: Historians @marthasjones.bsky.social & @katemasur.bsky.social (from our Teach Black Freedom Struggle series) filed amicus brief challenging an EO undermining birthright citizenship. Brief is a great resource for students on the 14th Amendment. www.zinnedproject.org/news/amicus-...
Amicus Brief for Supreme Court Birthright Citizenship Case
Two historians from our Teach the Black Freedom Struggle series — Martha S. Jones and Kate Masur — filed an amicus brief challenging an executive order undermining birthright citizenship.
zinnedproject.org
Teachers: Check out this summer institute on Reconstruction -- the Second Founding. Spend a week at the National Museum of African American History and Culture and at historic sites in DC area with historian @katemasur.bsky.social and others. Apply by 4/15. nmaahc.si.edu/events/freed...
Freedom Was in Sight: Reconstruction as the Second Founding
Freedom Was in Sight: Reconstruction as the Second Founding
nmaahc.si.edu
Excellent essay by @marthasjones.bsky.social and @katemasur.bsky.social on the history of the birthright citizenship clause—with a reference to Douglass’s brilliant composite nation speech delivered in Boston in 1869
I love a headline that gets right to the point (You can read @marthasjones.bsky.social and @katemasur.bsky.social’s full op-ed here: www.nytimes.com/2026/03/30/o...)
The historical conversation surrounding birthright citizenship is very clear as noted by @marthasjones.bsky.social and @katemasur.bsky.social There is no debate warranted. www.nytimes.com/2026/03/30/o...
Opinion | Trump Says Birthright Citizenship Was for the Children of Slaves. He’s Wrong.
nytimes.com
“From the start, birthright citizenship was understood as a vehicle by which ‘all persons’ born” in the United States, write Martha S. Jones and Kate Masur, “would become full members of a newly remade democracy.”
Opinion | Trump Says Birthright Citizenship Was for ‘the Babies of Slaves.’ He’s Wrong.
The framers of the 14th Amendment endorsed a capacious definition of ‘American.’
nyti.ms
On Wednesday, the Supreme Court will hear arguments about birthright citizenship. Here, for the NYTimes and with Kate Masur, I offer a view of what those of you who think historically should be listening for. www.nytimes.com/2026/03/30/o...
Opinion | Trump Says Birthright Citizenship Was for ‘the Babies of Slaves.’ He’s Wrong.
nytimes.com
"However the court decides, history shows that Mr. Trump is wrong," write @marthasjones.bsky.social & Historians Council Member @katemasur.bsky.social in @nytimes.com ahead of oral arguments in the SCOTUS case challenging Pres. Trump’s birthright citizenship order.
Opinion | Trump Says Birthright Citizenship Was for ‘the Babies of Slaves.’ He’s Wrong.
nytimes.com
For more from @katemasur.bsky.social and @marthasjones.bsky.social, check out their brief, detailing the long struggle for a broad and inclusive guarantee of birthright citizenship undertaken by free Black Americans before the Civil War. The Constitution instantiates that guarantee.
Trump is flat wrong when he claims that birthright citizenship was intended only for the "babies of slaves." Martha Jones and I have the receipts. www.nytimes.com/2026/03/30/o...
Trump is flat wrong when he claims that birthright citizenship was intended only for the "babies of slaves." Martha Jones and I have the receipts. www.nytimes.com/2026/03/30/o...
Opinion | Trump Says Birthright Citizenship Was for ‘the Babies of Slaves.’ He’s Wrong.
nytimes.com
Trump is flat wrong when he claims that birthright citizenship was intended only for the "babies of slaves." Martha Jones and I have the receipts. www.nytimes.com/2026/03/30/o...
Opinion | Trump Says Birthright Citizenship Was for ‘the Babies of Slaves.’ He’s Wrong.
nytimes.com
The Supreme Court's oral argument on birthright citizenship will kick off at 10 AM Eastern this Wednesday, April 1. You can (and should) listen live via the SCOTUS website: www.supremecourt.gov. In the interim, a 🧵⬇️ with some resources to get you ready... @brennancenter.org
Supreme Court of the United States Home
supremecourt.gov
The Trump administration's attacks on birthright citizenship are based on the same flawed thinking as the Supreme Court's infamous and long-ago-rejected opinion in Dred Scott v. Sanford (1857). Historians @katemasur.bsky.social and @marthasjones.bsky.social explain:
Why is protecting a universal birthright citizenship principle so critical? Historians @marthasjones.bsky.social and @katemasur.bsky.social shed light on one answer with the words of Abraham Lincoln: