Washington — In December 2005, when Congress enacted the Detainee Treatment Act, tightening restrictions against torture but barring lawsuits by Guantánamo detainees, Neil Gorsuch stood at the center of the internal debate about whether President Bush should issue a signing statement about the bill.

Judge Gorsuch, whose Supreme Court confirmation hearing is set to start on Monday, was then a senior official in the Justice Department. He pushed strongly for a signing statement — in part, he wrote in an email, because it could make clear the Bush administration’s view that the new torture ban was “best read as essentially codifying existing interrogation policies.”

An email chain about the development of Mr. Bush’s eventual signing statement, which attracted critics because it also claimed a right to bypass the torture ban under his powers as commander in chief, was among more than 100 pages of emails and documents from Judge Gorsuch’s 2005-2006 tenure at the Justice Department that the Trump administration provided to the Senate late on Friday.

The executive branch had previously withheld those pages from nearly 175,000 documents it provided to Congress because it considered them covered by a privilege for confidential internal deliberations. But it waived that privilege after Senator Dianne Feinstein of California, the top Democrat on the Senate Judiciary Committee, requested their disclosure. Previous disclosures showed that Judge Gorsuch helped to defend and advance the Bush administration’s positions related to Guantánamo detainees, military commissions and other policy disputes arising in the war on terrorism, although those policies had been set by others.