Rep. Paul Ryan (R-Wis.) said this week that he is open to closing the loophole that allows weapon purchases at gun shows without a background check.

In an interview with the Milwaukee Journal Sentinel published Tuesday, Ryan said gun show loopholes are a "very reasonable" issue and that it's "obvious" it should be addressed.

"I think we should look into someone who is not legally allowed to buy a gun going to (a show), buying one, and let's figure that out," he said. "I think we need to find out how to close these loopholes and do it in such a way that we don't infringe on Second Amendment rights." He said the details would have to be worked out in committee hearings, but that he has long thought the loophole should be addressed.

Ryan came out strongly, however, against an assault weapons ban, saying that it wouldn't work and that "there are legitimate reasons to own these guns." That ban looks increasingly unlikely to pass, as the White House has chosen to emphasize background checks.

When he testifies before the Senate Judiciary Committee on Wednesday, National Rifle Association Executive Vice President Wayne LaPierre will criticize universal background checks. But Sen. Joe Manchin (D-W.Va.) has said he is working with the NRA on the issue.