WASHINGTON (CNN) -- Facing a rebellion among fellow Republicans in the Senate, President Bush on Friday defended his stance on proposed military tribunals for suspected terrorists.
"There are two vital pieces of legislation in Congress that I think are necessary to help us win the war on terror," Bush said during a White House news conference.
The Bush administration says it wants to "clarify" how detainees are interrogated, but critics say it's an interpretation that could weaken the Geneva Conventions and threaten the safety of U.S. forces overseas.
"My job and the job of the people here in Washington, D.C., is to protect this country," Bush.
"This enemy has struck us and they want to strike us again, and we'll give our folks the tools to protect this country, that's our job."
The press briefing comes a day after the Senate Armed Services Committee voted 15-9 to recommend a bill -- over the objections of the Bush administration -- that would authorize tribunals for terror suspects in a way that it says would protect the defendants' rights.
The bill was backed by Republican Sens. John Warner of Virginia, chairman of the Armed Services Committee, John McCain of Arizona and Lindsey Graham of South Carolina. The three lawmakers and Susan Collins, R-Maine joined the Armed Services Committee's Democrats in voting for the bill. (Watch GOP senators buck the White House -- 2:57)
The committee's bill differs from the administration's proposal in two major ways: It would permit terror suspects to view classified evidence against them and does not include a re-interpretation of a Geneva Conventions rule that prohibits cruel and inhuman treatment of detainees.
In a decision this summer, the U.S. Supreme Court ruled that the administration must meet the Geneva Convention's Common Article 3 standards in its treatment of detainees.
Article 3 prohibits nations engaged in combat not of "an international character" from, among other things, "violence to life and person, in particular murder of all kinds, mutilation, cruel treatment and torture" and "outrages upon personal dignity, in particular, humiliating and degrading treatment."
The House Armed Services Committee sent the administration bill to the House floor in a 52-8 vote Wednesday.
White House: Critics misunderstand
On Thursday, White House spokesman Tony Snow said opponents of the administration's proposal on terrorist tribunals misunderstood the administration's intentions when it proposed to define how Article 3 applies to the interrogation of terrorist suspects.
The administration believes that the court's ruling prevents it from properly interrogating terrorist suspects because it opens military and CIA personal to prosecutions, so the White House asked Congress to define the the terms of Article III, Snow said.
"If you have people in the field trying to question terrorists, if you do not have clear legal definitions, they themselves will be subject to the whims and the differing interpretations given by foreign courts, foreign judges and foreign tribunals," Snow said. "And we don't think that's appropriate."
Secretary of State Condoleezza Rice sent a letter to Warner saying that the administration's "proposed legislation would strengthen U.S. adherence to Common Article 3 of the Geneva Conventions because it would add meaningful definitions and clarification to vague terms in the treaties."
Powell breaks with administration
But critics, including former Secretary of State Colin Powell and top Republican senators, oppose reinterpretation of the Geneva Conventions rule.
Powell expressed his opposition in a letter to McCain released Thursday.
Warner, Graham and McCain, a former Vietnam prisoner of war -- along with Powell -- oppose any changes to the U.S. interpretation of Article 3, arguing that it could adversely affect enemies' treatment of captured U.S. service members. (Watch why the GOP is split over tribunals -- 2:40")
"The world is beginning to doubt the moral basis of our fight against terrorism," Powell, a retired Army four-star general, wrote in his letter to McCain, whose amendment last year opposed the use of torture. (Read Powell's letter)
"To redefine Common Article III would add to those doubts," Powell said. "Furthermore, it would put our own troops at risk."
-Arlos