Does not matter which side you take. If you take the "well atleast he can carry argument" then you have screwed up the power of states. If you take the "we will just stop issuing out of state CCWs" then you have screwed thousands of people that can't get CCW in thier home state. pick a side, we all lose.
I for one would rather see CA get rid of CCW then have its power removed by the federal goverment.( you can take that any way you like) keeping the federal goverment out of the affiars of the states was a founding concept of this country.
The federal gubmint isn't trying to give or take away any states rights or powers with this proposed bill.
It's not even telling the states who can or can not issue a CCW license.
All the law would do is allow you to carry in any state IF you have a licence.
like ericire12 posted, it would work like a drivers license. If you have a Ga license, you can drive in any state as long as you abide by their traffic laws.