No US President is charged with impeachment at this time! The last President to face impeachment charges was Bill Clinton.
Two charged for a crime
... impeachment hearings.
Meaning that they charged him with " High crimes and misdemeanors" in office.
Impeachment
The maximum sentence for a conviction arising out of impeachment is removal from office. The official would be separately charged in a standard court for any crimes committed while in office.
They would be charged with a criminal offense, and then (probably) removed from office via impeachment by their state legislature.
He was charged with perjury, obstruction of justice, and abuse of power as a result of the Monca Lewinski and Paula Jones lawsuits.
The full Senate votes to determine the verdict in an impeachment trial. Two-thirds of the Senators must find an official guilty in order to remove him (or her) from office.
Because there are no legal grounds to do so. This has the same merit as asking why your grandmother hasn't been charged with Genocide.
Impeachment.
According to the United States Constitution, jurors in an impeachment trial in the Senate are not subject to criminal charges for their actions during the trial. Article I, Section 3 of the Constitution states that "the Senators and Representatives shall be privileged from Arrest during their attendance at the Session of their respective Houses, and in going to and returning from the same; and for any Speech or Debate in either House, they shall not be questioned in any other Place." This privilege protects Senators from being arrested or charged with crimes for their actions during an impeachment trial, including for obstruction of justice. However, this privilege does not protect Senators from being expelled from the Senate for their actions during an impeachment trial. Under the Constitution, the Senate has the power to expel a Senator by a two-thirds vote for "disorderly behavior." This power has been used sparingly in the past, and it is not clear how it might be applied in the context of an impeachment trial.