Prominent economist and gun rights advocate John Lott said that the enhanced background checks contained in new House-passed measures would burden law-abiding citizens and not reduce crime. The House approved two bills on Thursday that expand background checks on individuals who are seeking to purchase or transfer firearms and lengthens the review period for background checks from three days to up to 20. “It’s just a way for gun control advocates to impose what can be long waiting periods on people to be able to go and buy a gun,” Lott said. The bills would still need Senate approval before becoming law, an outcome Lott said is unlikely, unless Democrats reach for the so-called “nuclear option” and get rid of the Senate rule that requires a 60-vote majority to pass most legislation. “If the filibuster remains, I don’t think they’ll get it passed,” Lott said, noting that the two bills are …