The only thing that has stopped over-reaching presidents in the past, is when they try to take power from another branch of government, in their own party.
It wasn't until FDR started stepping on the toes of Democrat Senators that they grew a spine. And even then it was only due to concern that their own power and influence might be reduced.
It wasn't until FDR started stepping on the toes of Democrat Senators that they grew a spine. And even then it was only due to concern that their own power and influence might be reduced.