Presidential impeachment in the USA: How often has it happened? – Telegraph.co.uk
Clinton was impeached by the House of Representatives on December 19, 1998, on the grounds of perjury and obstruction of justice. Two other charges – a second perjury charge and a charge of abuse of power – failed to pass in the House.
The case then went to trial in the Senate, where, on February 12, 1999, he was acquitted. A two-thirds vote – 67 senators – were required to remove him from office. In the end, 50 voted to convict him for obstruction of justice and 45 found him guilty of perjury. No Democrats voted to convict him on either charge.
It should be noted that 18 current senators – 11 Republicans and seven Democrats – were in the chamber at the time of Clinton’s trial, according to Time.
Richard Nixon, to whom Mr Trump has frequently been compared in recent weeks, would almost certainly have become the third president to be impeached and would likely have been removed from office.