I live and work in Paris, France as a software engineer. My wife is a homemaker. I have a work assignment in Texas, USA in the month of may. We are planning to travel together as the assignment more than 3 weeks. My close friend and his wife stay in San Francisco.
Ideally I want my wife to go to SF and I go to Texas for work for 2 weeks and I would join them in SF , spend 10 days and fly back together.
Can we apply for B1 for me and B2 for my wife together? Or I should B1 first then go for her B2.
Once we apply for my wife’s visa based on my B1, can she fly directly to SF and not with me?
Do we need any invitation letter from my friend?
or is there any else that I should take care of.