Senate Finance Committee Chairman Chuck Grassley said Wednesday that the U.S.-Mexico-Canada Agreement on trade “looked increasingly unlikely” to pass this year.

“For months now, House Democrats have said they are working on it, that they are making progress and that they are optimistic that they can get to ‘yes.’ But with each passing month, these seem less like good faith assurances and more like stalling tactics,” the Iowa Republican said a Senate floor speech. He noted that it was nearly a year since the United States, Mexico, and Canada approved the deal, which would replace the 1993 North American Free Trade Agreement.