Medications might also cause a drop in blood pressure. Beta-blockers and nitroglycerin, used to treat heart disease, are common culprits. Diuretics, tricyclic antidepressants, and erectile dysfunction drugs can also cause hypotension. Some people have low blood pressure for unknown reasons.
Theoretically, then, the President can probably pardon him/her-self for any Federal crime â but this only prevents actual prosecution for that crime, not impeachment for the crime itself. Prior Answer, to the hypothetical of the VP murdering the President and then pardoning himself:
Attorney Samuel T. Morison told the Charlotte Observer that Obama can pardon Hillary but the âonly constraint is that he canât pardon someone in advance of committing the offenseâ and âthe Constitution says the president can pardon âoffensesâ against the U.S., not âconvictionsâ.â.