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:
A pardon is a government decision to allow a person who has been convicted of a crime to be free and absolved of that conviction, as if they were never convicted. Today, pardons are granted in many countries when individuals have demonstrated that they have paid their debt to society, or are otherwise considered to be deserving of them. Pardons are sometimes offered to persons who were either wrongfully convicted or who claim that they were wrongfully convicted. In some jurisdictions, accepting a pardon implicitly constitutes an admission of guilt (see Burdick v. United States in the United States), the offer is refused in some cases.