Three basic questions:

1. For LHR-MIA-DFW-GRU, will I be able to just use 1 eVIP for SWU as EXP?

2. For LHR-DFW-GRU, there is no way I can avoid queuing at immigration (and get a US stamp) at DFW is there? My feeling is that I HAVE to go through immigration and customs.

3. How about luggages on LHR-DFW-GRU? Can I check all bags through (i.e. without the need to pick them up at DFW to clear custom) from LHR to GRU?

Sorry if these are too basic- never did international connection in the US before :-s