Can't be pardoned unless convicted and found guilty. So President Trump enters the White House, and Hillary is then charged, convicted and found guilty... and jailed. Too late for Obama to do anything about it, as a former president he can't pardon her.
Couldn’t they rush through a conviction in December?
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>> “Can’t be pardoned unless convicted and found guilty.” <<
Not so!
Nixon was pardoned without being tried.
“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.”