WASHINGTON (Reuters) - U.S. Treasury Secretary Janet Yellen said on Thursday she was pleased the Senate was moving toward suspending the debt limit but she added that having a debt ceiling has become increasingly damaging to the United States. “It’s led to a series of politically dangerous conflicts that have caused Americans and global markets to question whether or not America is serious about paying its bills,” she told CNN in an interview. Reporting by Eric Beech and David Lawder; Editing by Sandra Maler Our Standards: The Thomson Reuters Trust Principles.