As I recall, it was LBJ that broke into the SS “lockbox” around 1964-65 to put the money into the General Fund. He needed the money to pay for his “Great Society” giveaways to blacks so they would be voting for Democrats for “a hundred years”.
The “lockbox” and “trust fund” were a fiction to dupe the masses from day one.
Money is fungible—which means that if you give me a dollar I get to spend it any way I want regardless of what moving lip noises I may send in your direction.
;-)