Throughout his term as president, Barack Obama has insisted his administration could not allow construction of the Keystone XL pipeline to carry Canadian oil to the U.S. unless the State Department signed off on it.

Last week, the State Department revealed – at last – that it can find no reason to believe the pipeline would be detrimental to the environment.

Some environmentalists hate the pipeline proposal – but they have not been able to come up with a reasonable objection to it, either.

Time’s up, Mr. President. Your list of excuses for blocking the pipeline has been exhausted.

The pipeline should be built, of course. It will provide thousands of jobs and an inexpensive source of oil for the United States. Now, Obama has no choice but to say “yes” to that – or to reject the pipeline solely to placate the radicals.