That’s the perplexing question, here, as well.
The Constitution requires that 66% of the Senate approve any treaty (and amendments are allowed).
With this fast track or trade promotion Authority bill they want to lower it to 51% and no amendments and only 60 days to pass a bill. that’s a dictatorship and the end of America. Obama can basically rewrite USA laws as treaties override USA laws.
It would be ridiculously easy to pass a treaty with only a 51% up or down vote , no debates and no amendments and only 60 days to pass it as the people wouldn’t have enough time to get the message to their representatives.
This is unconstitutional. We want amendments that could kill a bad bill as the Constitution allows. We want 66% approval not 51% .Call Congress . Tell them to vote no on TPA (Trade promotion authority).