President Obama, after objecting to provisions of a military spending bill that would have forced him to try terrorism suspects in military courts ... signed the bill on [New Year's Eve]. The White House had said that the legislation could lead to an improper military role in overseeing detention and court proceedings and could infringe on the president's authority in dealing with terrorism suspects. But it said that Mr. Obama could interpret the statute in a way that would preserve his authority. The president, for example, said that he would never authorize the indefinite military detention of American citizens, because doing so would break with our most important traditions and values as a nation." He also said he would reject a "rigid across-the-board requirement" that suspects be tried in military courts rather than civilian courts. Congress dropped a provision in the House version of the bill that would have banned using civilian courts to prosecute those suspected of having ties to Al Qaeda. It also dropped a new authorization to use military force against Al Qaeda and its allies. Civil liberties groups, including the American Civil Liberties Union, still oppose the law, in part because of its authorization of military detention camps overseas.