WASHINGTON (AP) — President Barack Obama says Massachusetts Sen. Elizabeth Warren and some other Democrats are "wrong" in opposing his bid to secure a free trade agreement with Asia-Pacific nations.

Obama says he would not be pursuing the trade deal if he didn't think it were good for middle class Americans.

The president is seeking "fast track" authority to advance trade deals being negotiated with numerous nations. The authority lets Congress reject or endorse, but not amend, proposed trade deals backed by the president.

The U.S. is negotiating with 11 other nations over a Trans Pacific Partnership agreement that aims to create a free trade zone in the Asia-Pacific region.

The president's comments came in an interview with MSNBC.