Sen. Kirsten Gillibrand (D-N.Y.) took credit for getting President Obama up to Buffalo, N.Y., for a rally but she won't be there when he takes the stage Thursday.
The Senate is debating its financial industry reform legislation, among other bills, and Gillibrand's office said she stayed in Washington to participate.
The House is also in session but that didn't stop New York Reps. Louise Slaughter (D) and Brian Higgins (D) from attending. Republican Rep. Chris Lee (N.Y.) was listed as a "tentative" participant by the White House.
Obama is set to tour a manufacturing firm, deliver some remarks on the economy and then hold a Q&A with an audience of some 230.
Earlier this year the White House moved to dissuade possible primary challengers not to run against Gillibrand, who was appointed by Gov. David Paterson (D) after Hillary Clinton became secretary of state. She now has a clear path to the Democratic nomination and hasn't drawn a top-tier Republican challenger despite not having high name identification in New York.
(A spokesman for Rep. Lee said he "is at Industrial Support Inc. in Buffalo and waiting for the president to begin his remarks.)
Updated at 2:25 p.m.