Another reason to say that Jimmy Carter was the worse president ever... his negative effects on the world continue to this day:

The high dollar price of oil, which is imported, is a major driver of Salvadoran inflation. So, too, is the high cost of imported food. El Salvador once had its own vibrant agricultural sector, but agrarian reform imposed by the U.S. during the Carter administration destroyed the large, efficient farm and left rural communities destitute. So at a time when U.S agriculture was consolidating and mechanizing, a model of primitive, postage-stamp farming -- less than 500 hectares per farm -- was forced on El Salvador. Agriculture has never fully recovered