“What began on the political fringes only a week ago has built a momentum that even critics say may be unstoppable, drawing support from Republican and Democratic leaders, attracting moderates in both parties and pulling in some of the most respected voices on national security in the House.
The rapidly shifting politics were reflected clearly in the House on Wednesday, when a plan to defund the National Security Agency’s telephone data collection programfell just seven votes short of passage. Now, after initially signaling that they were comfortable with the scope of the N.S.A.’s collection of Americans’ phone and Internet activities, but not their content, revealed last month by Edward J. Snowden, lawmakers are showing an increasing willingness to use legislation to curb those actions.