Laurence H. Tribe writes: The time has come for Congress to launch an impeachment investigation of President Trump for obstruction of justice.

The remedy of impeachment was designed to create a last-resort mechanism for preserving our constitutional system. It operates by removing executive-branch officials who have so abused power through what the framers called “high crimes and misdemeanors” that they cannot be trusted to continue in office.

No American president has ever been removed for such abuses, although Andrew Johnson was impeached and came within a single vote of being convicted by the Senate and removed, and Richard Nixon resigned to avoid that fate.

Now the country is faced with a president whose conduct strongly suggests that he poses a danger to our system of government. [Continue reading…]