The overwhelming majority of gun owners are in favor of universal background checks, of raising the minimum age to buy guns to 21 and so-called "red flag" laws to remove guns from potentially dangerous people, a new NPR/Ipsos survey finds. That mirrors the support among the rest of the public.So why is it that ideas with broad-based support have such trouble becoming federal law?This episode: White House correspondent Tamara Keith, senior political editor and correspondent Domenico Montanaro, and national political correspondent Mara Liasson.Support the show and unlock sponsor-free listening with a subscription to The NPR Politics Podcast Plus. Learn more at plus.npr.org/politics Connect:Email the show at nprpolitics@npr.orgJoin the NPR Politics Podcast Facebook Group.Subscribe to the NPR Politics Newsletter.