No one, not even the press does. He has passed more presidential executive orders than any other American president usurping Congress' lawmaking powers. He cares only about himself and gaining money and power while in office. He accepts no responsibility for his actions. When tragedy strikes he is right there to suggest more restrictive laws be passed against our right to protect ourselves.
Guns are inanimate objects.
The guns as well as manufacturers who make guns and dealers who sell guns did not kill. The people holding and firing the guns are the ones who are guilty of the murders of those innocent people. They are responsible. It is the same if someone has a knife and kills another person, or an ax, or even a car. It is ludicrous to look at it in any other way.