The U.S presidents which were impeached are Andrew Johnson , Bill Clinton, and Donald Trump.All of the three presidents were impeached and acquitted by the senate.No one was found guilty.President Andrew Johnson was impeached for breaking the law by firing an important official (his secretary of war, Edwin Stanton)without first getting the Senate's permission.President Bill Clinton was impeached for committing perjury by denying his relationship with Lewinsky, and obstructing justice.President Donald Trump was impeached twice.On December 2019,he was impeached for abuse of power by withholding military aid to Ukraine to try to pressure the country into conducting and publicly announcing an investigation into the Biden family(Joe and Hunter Biden), and obstruction of Congress .On January 6 ,2020 he was impeached for inciting a violent insurrection on the US Capitol .


