What year did Juneteenth become a federal holiday?

What year did Juneteenth become a federal holiday?

A 1979
B 2002
C 2021

Legislation to make Juneteenth a federal holiday was first proposed by Michigan Rep. Barbara-Rose Collins in 1996. Other bills followed in subsequent years, and the Juneteenth National Independence Day Act was passed by Congress and signed into law by President Joe Biden on June 17, 2021.

The correct answer is 2021.