H.R. 822 has made it through the U.S. House of Representatives. From the NRA-ILA website:
H.R. 822, introduced in the U.S. House by Representatives Cliff Stearns (R-Fla.) and Heath Shuler (D-N.C.), allows any person with a valid state-issued concealed firearm permit to carry a concealed firearm in any state that issues concealed firearm permits, or that does not prohibit the carrying of concealed firearms for lawful purposes.
This bill does not affect existing state laws. State laws governing where concealed firearms may be carried would apply within each state’s borders. H.R. 822 does not create a federal licensing system or impose federal standards on state permits; rather, it requires the states to recognize each others’ carry permits, just as they recognize drivers’ licenses and carry permits held by armored car guards.