I've been trying to find the precise text of the laws relating to G and A visas. There's apparently a law that you can't apply for any other non-immigrant visa than a G or A if you're eligible to apply for a G or A. In particular, if your spouse has a G or A visa, then you can't apply for e.g. an H-1B.
I've not found clear information of the situation where a spouse is already a nonimmigrant visa holder. Are you forced to give up your old visa in this case? I've tried to find the actual text of the law that governs this, but I can't find it. Is anyone able to point me to the exact text?
To be clear. I'm not looking for an answer to any other question than getting a pointer to the precise text.