CINCINNATI (AP) -- Ohio's Republican U.S. senator canceled a trip to New Hampshire to be in Washington on Friday for classified briefings on Syria.
Rob Portman, of suburban Cincinnati, said he was undecided on whether to support President Barack Obama's call for a U.S. military strike against Syria.
"I am looking forward to learning more about the situation directly from the administration and our military leadership," Portman said in a statement. "I have a lot of questions that have not yet been answered."
He said he wants to be certain that any planned military action is part of a clear strategy with goals for Syria and the region.
Ohio's Democratic U.S. Sen. Sherrod Brown also hasn't decided on the Syria vote. An Associated Press survey found 36 senators in support, 29 against and 35 undecided at this point.
Portman had planned to take part in a Republican fundraising event in New Hampshire. The former congressman and White House budget chief has been mentioned as a potential 2016 presidential candidate, and trips to the early primary state are often part of testing the waters for a possible run.