CHEYENNE (AP) — Wyoming Gov. Matt Mead is joining other governors in calling on President Barack Obama to stop bringing refugees from Syria or other countries until the federal government can guarantee that there are no terrorists among them.

Mead wrote to Obama on Tuesday saying that in response to last week's terrorist attacks in Paris that he's joining with other governors in demanding a halt to the refugee program. The governor said "Wyoming will not accept a lackluster system that allows terrorists to slip through the cracks.”

More than two dozen governors around the country have called for Syrian refugees to be barred from the country.

Wyoming is the nation's least-populated state and has no state refugee settlement program. Mead says he's not aware that any refugees have arrived in the state.

“No state should have to endure the threat of terrorists entering our borders,” Mead said in a statement Tuesday. “The president needs to make certain an absolutely thorough vetting system is in place that will not allow terrorists from Syria or any other part of the world into our country. In light of the horrific terrorist attacks in Paris, I have joined other governors in demanding the refugee process be halted until it is guaranteed to provide the security demanded by Wyoming and United States citizens."