WASHINGTON—An interim report by House Republicans faults the State Department and former Secretary of State Hillary Rodham Clinton for security deficiencies at the U.S. diplomatic mission in Benghazi, Libya, prior to last September’s deadly terrorist attack that killed Ambassador Chris Stevens and three other Americans. Senior State Department officials, including Clinton, approved reductions in security at the facilities in Benghazi, according to the report by GOP members of five House committees. The report cites an April 19, 2012, cable bearing Clinton’s signature acknowledging a March 28, 2012, request from then-U.S. Ambassador to Libya Gene Cretz for more security, yet allowing further reductions. “Senior State Department officials knew that the threat environment in Benghazi was high and that the Benghazi compound was vulnerable and unable to withstand an attack, yet the department continued to systematically withdraw security personnel,” the report said. Release of the report comes as dozens of House Republicans separately have pushed for Speaker John Boehner, R-Ohio, to create a select committee to investigate the Sept. 11, 2012, attack. The Associated Press obtained a copy of the report Tuesday. The report also is highly critical of President Barack Obama and White House staff. In the days following the attack, White House and senior State Department officials altered what the report said were accurate “talking points” drafted by the U.S. intelligence community in order to protect the State Department. And contrary to what the administration claimed, the alterations were not made to protect classified information. “Concern for classified information is never mentioned in email traffic among senior administration officials,” according to the 43-page report. Last December, senior State Department officials acknowledged major weaknesses in security and errors in judgment that had been revealed in a scathing independent report on the deadly assault. Deputy Secretary of State William Burns and Deputy Secretary of State Thomas Nides admitted that serious management and leadership failures left the mission in Benghazi woefully unprepared for the terrorist attack. Clinton, testifying before Congress in the final weeks of her tenure, took responsibility for the department’s missteps and failures leading up to the assault. But she insisted that requests for more security at the diplomatic mission in Benghazi didn’t reach her desk, and reminded lawmakers that they have a responsibility to fund security-related budget requests. The report from the House committees is the latest broadside in what has been a long-running and acrimonious dispute between the Obama administration and congressional Republicans who have challenged the White House’s actions before and after the Benghazi attack. House and Senate Republicans for weeks fought for access to information about the attack and used the nominations of two key Obama administration national security officials—Defense Secretary Chuck Hagel and CIA Director John Brennan—as leverage to obtain internal documents about the raid.