Constitution

U.S. military action in Mexico would not only be illegal, it would sabotage Trump’s stated immigration policy priorities and could lead to retaliation against Americans.

"In their apparent effort to give credence to the Trump Executive Order, Professors Barnett and Wurman indefensibly ignore these core, constitutive principles."

The president is wrong about what an invasion is—and what powers it triggers.

Expert Backgrounder on how civil service laws do or do not protect DOJ and FBI officials from retaliation.

The president and his allies are leading an effort to eviscerate the free press and construct an information ecosystem favorable to his views.

A recent clarification could help former government employees who once held security clearances publicly write and speak more freely.

Updated to account for reply briefs and Feb. 5 judicial opinion issuing a nationwide preliminary injunction

U.S. media institutions are abandoning their own First Amendment rights by settling lawsuits with Trump, writes Jaffer for the New York Times.

An expert explainer on the Executive Order on the "Invasion" Executive Order and deployment of troops.

Analyzing legal and policy implications of President Trump using US military resources to support immigration enforcement at the border.

Trump's recent executive actions appear to assert an authority to override or ignore federal legislation whenever it interferes with his policy aims.

Judge Hall’s Hasbajrami decision marks the first time a court has ruled that U.S. person queries of FISA Section 702 data must be performed pursuant to a warrant or an exception…