Senate Republicans have rejected a request from moderate Democratic senators for a bipartisan effort on immigration. 

The 12 Democratic senators sent a letter to Senate Majority Leader John Thune, R-S.D., suggesting a bipartisan solution on the issue. The letter was signed by swing state  Sens. Mark Kelly, of Arizona, and Raphael Warnock, of Georgia.

“We remain ready to work with you in good faith to craft legislation that can achieve bipartisan support and 60 votes in the Senate," the letter reads.

Sen. Ron Johnson, R-Wis., said that he laughed when he got the letter, according to the NBC news outlet.

“That’s a letter we will ignore,” he reportedly said. "We’re not going to wait for them. If they want to secure the border, they could have done that. That’s not what they want.”

Senate Budget Committee Chair Lindsey Graham, R-S.C., said that the GOP will not rely on Democrats for a deal on immigration.