What are some reasons a president can be impeached?

The US Constitution specifically lists as reasons for impeachment "treason, bribery, or other high crimes and misdemeanors." The dictionary defines a misdemeanor as any misconduct less serious than a felony, so any violation of the US Constitution and/or federal law is an acceptable cause for impeachment. It is left up to the discretion of the US House of Representatives, the only body that can issue a federal impeachment. Traditionally they have reserved the power for only extreme cases.
The US Constitution specifically lists as reasons for impeachment "treason, bribery, or other high crimes and misdemeanors." The dictionary defines a misdemeanor as any misconduct less serious than a felony, so any violation of the US Constitution and/or federal law is an acceptable cause for impeachment. It is left up to the discretion of the US House of Representatives, the only body that can issue a federal impeachment. Traditionally they have reserved the power for only extreme cases.