I'm trying to get all my planning for my paperwork done at the moment; the TSA verification programme has an entry for any US Visas held. I currently hold a C1/D1 Visa (for my day job) but will be getting an M1 for my flight training. Do I have to have the M1 before applying for TSA clearance or can I conduct both applications in parallel?
I hope having the C1/D1 doesn't muddy the waters at the TSA, it not having the required privileges to stay and conduct flight training.