Senate to begin debate this week on bill to protect same-sex marriageWASHINGTON — The Senate will begin debate this week on legislation protecting same-sex marriage, Majority Leader Chuck Schumer said, after the bill’s sponsors made changes aimed at drawing enough Republican votes to win passage. The first procedural vote will be Wednesday on “an extremely important and much-needed bill,” Schumer, D-N.Y., said Monday on the Senate floor. “No American should ever be discriminated against because of who they love. Passing this bill would secure much-needed safeguards into federal law.” The legis…