WASHINGTON — President Obama on Wednesday rejected, for now, the proposed Keystone XL oil pipeline, saying the $7 billion project could not be adequately reviewed within the 60-day deadline set by Congress. While the president’s action does not preclude later approval of the project, it sets up a baldly partisan fight over energy, jobs and regulation that will most likely persist through the November election.

The president said his hand had been forced by Republicans in Congress, who inserted a provision in the temporary payroll tax cut bill passed in December giving the administration only until Feb. 21 to decide the fate of the 1,700-mile pipeline, which would stretch from oil sands formations in Alberta to refineries on the Gulf Coast.

The State Department, which has authority over the project because it crosses an international border, said there was not enough time to draw a new route for the pipeline and assess the potential environmental harm to sensitive grasslands and aquifers along its path. The agency recommended that the permit be denied, and Mr. Obama concurred.

“As the State Department made clear last month,” the president said in a statement, “the rushed and arbitrary deadline insisted on by Congressional Republicans prevented a full assessment of the pipeline’s impact, especially the health and safety of the American people, as well as our environment.”