President Obama expressed optimism at a Friday press conference that Congress can approve a sweeping Pacific Rim trade deal.

Obama called the Trans-Pacific Partnership (TPP) "a big deal" and acknowledged that opponents in both parties make for “an interesting situation."

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He said the White House will need to "stitch together the same kind of bipartisan effort" that helped his administration win a fight over fast-track trade authority.

The president argued that the trade pact between the United States and 11 other nations meets the bar he set for the agreement and is consistent with what he promised — major commitments on labor and the environment along with the elimination of thousands of tariffs on U.S. exports. Obama repeated his call that the TPP is the "most progressive trade deal in history."

Speaker Paul Ryan Paul Davis RyanKenosha will be a good bellwether in 2020 At indoor rally, Pence says election runs through Wisconsin Juan Williams: Breaking down the debates MORE (R-Wis) said earlier this week that he wants to take a vote as soon as possible on the expansive Pacific Rim trade agreement if the pact lives up to the promises made by the White House.

He said he doesn't have a set date in mind but that the TPP is “very important” and "has a lot of promise” because it gives the United States the ability to write the rules of global trade in the fastest growing region in the world.

Ryan's comments struck a different tone than Senate Majority Leader Mitch McConnell Addison (Mitch) Mitchell McConnellFEC flags McConnell campaign over suspected accounting errors Poll: 59 percent think president elected in November should name next Supreme Court justice Mark Kelly: Arizona Senate race winner should be sworn in 'promptly' MORE (R-Ky.), who said last week that Obama would be making a "big mistake" if he sought a vote on the TPP before the 2016 elections.

But Obama also said that a presidential election year can easily skew the best-laid legislative plans with lawmakers "looking over their shoulders" amid worries about the primaries.

"That makes it harder" to make strides on the agenda, he said.