What law allowed FDR to supply weapons and supplies for free to Britain?

The Lend-Lease policy, formally titled An Act to Promote the Defense of the United States, was a program under which the United States supplied the United Kingdom, Free France, the Republic of China, and later the Soviet Union and other Allied nations with food, oil, and materiel between 1941 and August 1945.

“i think it is very plausible that if there are five votes to end the death penalty, it could be with the people who are on the court right now,” - smith

so basically it is not clearly and consistently imposed

d. it gave farmers a way to organize for more political power