Meena Price , of-course consult with your attorney and CPA but if your LLC does business in PA, it will need to be registered as a foreign Corp in PA and pay PA taxes.I don't see the benefit of of have a LLC registered outside PA unless you believe the business laws are much friendlier, which is why some people choose states like DE.Some people deal in their personal names and carry an umbrella policy for liability.If you ever want to get a mortgage from a bank, most will not lend to LLCs.

The catch is both the buyers and seller is foreign national.

Law enforcement will confirm fraud as well as the bank but most likely it will be from some foreign country unknown  person

So, if you create an LLC in one of those other states, you will need to register it as a foreign LLC in California. 

A bit risky, but a lot of foreign money is sitting in that market right now with that anticipation! 

How's the title being formulated for foreign buyer ?

I am not recommending any foreign country at present.

Is the foreign cash no longer driving up prices?

I am involved in foreign currencies.

I have an LLC registered in one state, but find a property to wholesale in another, do I have to register my LLC as a foreign LLC to do business in that state?