Looks like I overstated it a bit. Here's some detail on the changes made in 1970 and later that decade: https://www.congressionalresearch.org/LRA.html https://w

Looks like I overstated it a bit. Here's some detail on the changes made in 1970 and later that decade: https://www.congressionalresearch.org/LRA.html https://www.congressionalresearch.org/LRA.html