Republican Reps. Buck McKeon and Joe Wilson are calling for a delay in ending “Don't Ask, Don't Tell,” the policy set to expire on Tuesday that bans gay and bisexual troops from serving openly, gay weekly the Washington Blade reported.

McKeon, who chairs the House Armed Services Committee, and Wilson, who chairs the House Armed Services Personnel Subcommittee, penned a letter to Defense Secretary Leon Panetta in which they argued that repeal cannot proceed because they have yet to receive revised regulations.

“Committee officials have requested, but not received, copies of the revised regulations and a summary of all the specific policy changes, especially with regard to benefits, that will take effect upon repeal,” the lawmakers wrote.

This “leads us to conclude that decisions on the policies and regulations to implement repeal are not complete and that your certification and those of the others were inaccurate.”

Lawmakers approved a plan to repeal the law in December. Proponents of repeal circumvented the Armed Services Committee by attaching an amendment to the military's annual budget on the House floor.

The Pentagon asserted the policy will end on September 20.

“The repeal of 'Don't Ask, Don't Tell' will occur, in accordance with the law and after a rigorous certification process, on Sept. 20,” an unnamed Pentagon spokesman said. “Senior Department of Defense officials have advised Congress of changes to regulations and policies associated with repeal. We take that obligation seriously.”

Aubrey Sarvis, executive director of Servicemembers Legal Defense Network (SLDN), noted that the law only “requires that the new regulations be prepared – not issued – before certification.”