The President, Vice President and all civil Officers of the United States, shall be removed from Office on Impeachment for, and Conviction of, Treason, Bribery, or other high Crimes and Misdemeanors.
If the President, Vice-President, or other officers of the US are accused of treason, accepting bribes, or committing other crimes, there is a vote to remove them from office and to have a trial to establish guilt.
Just because the word is bandied about a great deal lately, I do want to caution my readers that in the US, the crime of Treason is very specifically defined, and doesn’t mean, “You’re a rotten American” or even “You’re putting your own interest before that of the US.” We’ll be getting to it at the end of Article III.