This is a very, very bad idea. You don’t want the federal government involved in what should be a states’ rights situation. It is working out quite nicely as the states interact to allow reciprocity. Sure, some states (such as Maryland) don’t do business with any other state. But who wants to go to or through Maryland?
Remember, what Uncle Sam grants, he can take away! Remember that.
Remember THIS: Even what Uncle Sam doesn't grant he can STILL take away. Barbara Boxer has already introduced a bill in the US Senate to ban ccw in all the states under any and all circumstances except those decreed by the Dems. Federal law trumps state law. Leave aside the 10th Amendment for awhile since I doubt that the USSC will revisit that issue in a lawsuit challenging that law -- too many other cases of settled and established law would be affected. If there is already a federal law on the books in the other direction, that has to be repealed FIRST before the Boxer legislation can move forward. That is established law as well. Of course there is very little chance either will actually become law. But if the next President is pro-gun and we can pull a progun majority in the Congress, then we've got a shot at establishing new precedent that will last through an assault from any future antigun situations.