More than one do not trust Obama to negotiate in good faith..
Check it out:

Republican members aren’t buying what President Barack Obama and House Speaker Rep. John Boehner (R-OH)40% are selling when it comes to Obamatrade, and support for the president’s key trade agenda item is starting to fall apart rapidly amid grassroots pressure.

“I’m voting against Trade Promotion Authority,” Rep. Paul Cook (R-CA)
50% told Breitbart News on Tuesday.

I don’t trust President Obama to negotiate in good faith.