(AP) — Louisiana’s Democratic attorney general says he will challenge the congressional health care legislation approved this weekend, a health overhaul that Gov. Bobby Jindal calls unconstitutional.Attorney General Buddy Caldwell says he hasn’t decided whether Louisiana will join other states in currently pending lawsuits or file a separate lawsuit on behalf of the state.It’s unclear on what grounds Caldwell will argue against the health overhaul. A Caldwell spokeswoman says the challenge likely will be on constitutional issues, but she says a decision hasn’t been made.Jindal asserts states’ rights privileges and contends the federal government can’t require people to buy insurance.State lawmakers will consider a bill that attempts to nullify parts of the health care legislation.