On February 17, I participated in a discussion at the National Constitution Center in Philadelphia on United States v. Texas and the Take Care Clause. Here is a description of the event:

After the House declined to pass a Senate immigration bill, President Obama used his executive authority to defer the deportation of millions of immigrants living in the U.S. illegally. Is the President’s policy unconstitutional? Join us for this debate featuring celebrated constitutional scholars Josh Blackman, Adam Cox, Cristina Rodriguez, andNicholas Quinn Rosenkranz. Jeffrey Rosen, National Constitution Center president and CEO, moderates.

It was an excellent discussion, and I encourage you to watch the video. My first comments starts around 9:30, where I offer a remembrance of Justice Scalia, and segue into his Arizona v. U.S. dissent, which augured his vote on U.S. v. Texas.