It goes back further then Slick Willy, the first public big proponent of that with congressional clout was a Colorado Rat congresswoman. (I forget her name!) I believe she chaired the House defense committee for a number of years. I just remember she had this smirk whenever some old general\admiral would testify contrary to her wishes and a laugh that made nails on a blackboard musical.
But she was just a Congresswoman. She could push it all she wanted, she couldn’t set policy. It took one or more of the fools that we sent to the White House to do it.