Nope, the threshold is 60 votes, which is the trick that Hatch put into the bill, which virtually make it impossible to stop anything Obama presents before the Senate. And Hatch knows that, and presumably Cruz.
A simple majority stops all fast-track bills. 60 votes in the Senate allow changes to the bill. This is how TPA works.
Please post where this “Hatch” thing is so we can validate your words.
Thanks.