After being impeached, President Andrew Johnson survived his 1868 Senate trial by just one vote. And to this day, how that vote was cast remains shrouded in controversy.

April 23 marks the birthday of James Buchanan, the man regarded by many historians as one of the worst presidents of all time. So what did Buchanan do to earn the disrespect of so many people?

On this day in 1789, the First Congress under our current Constitution met in its first joint session in New York and undertook an important order of business: confirming George Washington’s election as President.

On this day in 1867, United States Secretary of State William Seward signed a deal acquiring Alaska, an agreement that was ridiculed by some as “Seward’s Folly” and opposed in the House.

On March 28, 1834, the U.S. Senate censured President Andrew Jackson in a tug-of-war that had questionable constitutional roots but important political overtones.

Constitution Daily contributor Lyle Denniston looks at the current debate over the Electoral College and why history, as well as contemporary politics, may be stacked against its elimination.

It was on this day that the United States Senate began the first trial of a sitting United States President after the House approved impeachment charges against President Andrew Johnson.

In an act of “judicial jujitsu,” the Supreme Court issued its decision in Marbury v. Madison on February 24, 1803, establishing the high court’s power of judicial review.

The state of Maryland is asking a federal judge to rule that current acting U.S. Attorney General Matthew G. Whitaker can’t serve in that capacity in a lawsuit involving Obamacare, setting up a challenge to his overall status in that position.

The Trump administration’s proposal to create a sixth military service branch to focus on space warfare is raising an interesting debate about the Constitution’s original meaning and how a Space Force would come into existence.