In This Hour: REBROADCAST --  The U.S. Supreme Court accepts two new gun cases and hears an important Second Amendment Challenge.   Michael Cargill explains his challenge to the ATF. --  Should he buy an older rifle or pay just a little more to get a new one that's probably better? --  A flawed decision in the 7th Circuit upholds the Illinois ban on many semi-auto rifles, handguns, and shotguns.  Experts think this is destined to be decided by the U.S. Supreme Court. Tom Gresham's Gun Talk  01.21.24  Hour 1