OK, I'll take a stab at that one:
Because you do not have a high school level of understanding regarding the impeachment process and by continuing to argue, you are making yourself look like an uneducated fool.
Really?
Impeachment
The Senate's Impeachment Role
The United States Constitution provides that the House of Representatives "shall have the sole Power of Impeachment" (Article I, section 2) and that "the Senate shall have the sole Power to try all Impeachments .... [but] no person shall be convicted without the Concurrence of two-thirds of the Members present" (Article I, section 3). The president, vice president, and all civil officers of the United States are subject to impeachment.
Snip...” In impeachment proceedings, the House of Representatives charges an official by approving, by majority vote, articles of impeachment. A committee of representatives, called “managers,” acts as prosecutors before the Senate. The Senate Chamber serves as the courtroom. The Senate becomes jury and judge, except in the case of presidential impeachment trials when the chief justice of the United States presides. The Constitution requires a two-thirds vote of the Senate to convict, and the penalty for an impeached official is removal from office. In some cases, disqualification from holding future offices is also imposed. There is no appeal.
Anything else I need to know?
Shall we return to the issue of pardons?
As a result of certain acts or omissions occurring before his resignation from the Office of President, Richard Nixon has become liable to possible indictment and trial for offenses against the United States. Whether or not he shall be so prosecuted depends on findings of the appropriate grand jury and on the discretion of the authorized prosecutor. Should an indictment ensue, the accused shall then be entitled to a fair trial by an impartial jury, as guaranteed to every individual by the Constitution.
It is believed that a trial of Richard Nixon, if it became necessary, could not fairly begin until a year or more has elapsed. In the meantime, the tranquility to which this nation has been restored by the events of recent weeks could be irreparably lost by the prospects of bringing to trial a former President of the United States. The prospects of such trial will cause prolonged and divisive debate over the propriety of exposing to further punishment and degradation a man who has already paid the unprecedented penalty of relinquishing the highest elective office of the United States.
Now, Therefore, I, Gerald R. Ford, President of the United States, pursuant to the pardon power conferred upon me by Article II, Section 2, of the Constitution, have granted and by these presents do grant a full, free, and absolute pardon unto Richard Nixon for all offenses against the United States which he, Richard Nixon, has committed or may have committed or taken part in during the period from January 20, 1969 through August 9, 1974.
How can an innocent person be pardoned? Even Ford said he had committed offenses.