National Economic Council director Gary Cohn was noticeably absent from a long list of "thank-you's" when President Trump put an event on hold Wednesday to thank aides and lawmakers who have been instrumental in his administration's push for tax reform.

The president kicked off his remarks at the event in Springfield, Mo. by thanking nearly a dozen individuals in attendance, but not Cohn.

Trump offered shout-outs to Treasury Secretary Steven Mnuchin, Commerce Secretary Wilbur Ross, the head of the Small Business Administration, Linda McMahon, Missouri's Sen. Roy Blunt, Gov. Eric Greitens, and Lt. Gov. Michael Parson, and at least five "great members of Congress" in the audience.

"Anybody I forgot?" Trump said, looking around the room. "Good, I got it."

But reporters were quick to note Trump did forget somebody: His top economic adviser, who recently criticized the president's response to the violence in Charlottesville in a high-profile interview with the Financial Times.

Cohn had been spotted boarding Air Force One with several other White House aides, including first daughter Ivanka Trump, ahead of the event in Missouri. He has been instrumental in coordinating with congressional Republicans on the president's plans for tax reform.