Sen. John Hoeven (R-N.D.) used Wednesday night’s dinner between President Obama and a dozen GOP senators to seek a “definitive timeline” for the White House decision on the proposed Keystone XL oil pipeline, a senior Hoeven aide said.

But Obama didn’t provide one, according to the aide to Hoeven, a lawmaker who is among the most vocal Capitol Hill supporters of the pipeline.

“The president said he recognizes that Senator Hoeven really wants the Keystone XL pipeline built. The senator told the president we need a definitive timeline for a decision on the pipeline. The president said we should follow up with his energy adviser,” said Ryan Bernstein, Hoeven’s chief of staff.

Hoeven is a leader of Capitol Hill efforts to win federal approval of TransCanada Corp.’s pipeline, which would bring oil from Alberta’s oil sands projects to Gulf Coast refineries. The pipeline would also carry oil from the booming Bakken formation in North Dakota and Montana.