Republicans in the Indiana General Assembly are again pushing for a constitutional amendment that would ban gay marriage and civil unions. A GOP-led House committee voted 8-4 Monday for the proposal, which now goes to the full House. Indiana law already bans gay marriage, but amendment proponents say it belongs in the Constitution because courts could overturn the state law.Opponents say the amendment would write discrimination into the state Constitution. A gay marriage amendment passed the General Assembly in 2005, but it has to clear two legislatures and a public referendum in order to be put into the Constitution.It has not cleared the House since Democrats took control in 2006, Republicans now hold a majority again in both chambers.(Information for this story also came from the Associated Press)