National Beer Day is celebrated in the United States every year on April 7, marking the day that the Cullen–Harrison Act came into force after having been signed into law by President Franklin D. Roosevelt on March 22, 1933. This led to the Eighteenth Amendment being repealed on December 5, 1933, with the ratification of the Twenty-first Amendment. April 6, the day prior to National Beer Day, is known as New Beer's Eve.
Given this paragraph about National Beer Day in the United States, which president signed National Beer Day into law?
Franklin D. Roosevelt.