Graham, Ayotte call for hearing on Gitmo transfers
A pair of leading Senate foreign policy hawks are pushing for a review of President Obama's continued detainee transfers out of the Guantanamo Bay detention center, suggesting he's risking national security. 
GOP Sens. Kelly AyotteKelly AyotteFEC commissioner to Trump: Prove voter fraud Live coverage: Day three of Supreme Court nominee hearing Lewandowski saw no evidence of voter fraud in New Hampshire MORE (N.H.) and Lindsey GrahamLindsey GrahamRepublicans giving Univision the cold shoulder: report Graham: 'I'm glad' Ivanka will be working in the White House Trump tweets promotion for Fox News show MORE (S.C.) sent a letter to Chairman John McCainJohn McCainGrassley wants details on firm tied to controversial Trump dossier Republicans giving Univision the cold shoulder: report This week: GOP picks up the pieces after healthcare defeat MORE (R-Ariz.) and ranking member Jack ReedJack ReedDem Sen. Reed to oppose Gorsuch Dems introduce MAR-A-LAGO Act to publish visitor logs The Hill’s Whip List: Where Dems stand on Trump’s Supreme Court nominee MORE (D-R.I.) asking that the Senate Armed Services Committee hold a hearing related to the administration's handling of the controversial Cuban facility. 
"We believe that Congress must conduct a thorough review of the administration’s actions which are endangering the security of Americans and our allies," they wrote in Monday's letter. "We respectfully request that the Senate Armed Services Committee convene a hearing related to Guantanamo detainee transfers without delay."
The letter comes as the Pentagon announced the fourth transfer of a Guantanamo Bay detainee this month as the administration refocuses on its long-standing campaign pledge to close the facility before Obama leaves office early next year. 
White House chief of staff Denis McDonough doubled down on that promise during an interview this weekend with "Fox News Sunday."
Administration officials have pledged for months to hand over a plan to Congress on closing the facility, though Republicans have signaled that any proposal will be dead on arrival. 
Ayotte, who faces a tough reelection battle in New Hampshire, and Graham, who ended a presidential bid last month, said they were "deeply concerned" by McDonough's comments and that the administration is continuing "to transfer high-risk detainees who are likely to reengage in terrorism and put Americans and our allies at risk."
The two senators were part of a group of Republicans who sent a letter to the president last year calling for the administration to release additional information about detainees transferred out of Guantanamo Bay. 
They doubled down on that in Monday's letter, saying Americans are "left in the dark" about the potential terrorist connections of detainees and that a recently passed defense policy bill "makes clear Congress’ expectation that the administration be more forthcoming regarding the detainees at Guantanamo." 
The Armed Services Committee currently doesn't have a hearing on Guantanamo scheduled. 
Dustin Walker, a spokesman for McCain, said that the Arizona Republican "will continue to work closely with Senators Ayotte and Graham to push for a comprehensive detention strategy that gives our military and intelligence professionals the tools they need to defend the nation. " 
McCain has been one of the administration's few Republican allies in its push to close the Cuban facility, though the Arizona Republican has voiced frustration over the administration's delay in handing over its forthcoming plan.