Need advice on moving abroad as a Muslim woman - feeling unsure about my brother

Assalamu alaykum, I need some advice. My older brother (30 M) is married to a non-Muslim woman and lives in the US. He went there on a student visa at 25, has a steady job, a nice car and apartment. He doesn’t send us money - alhamdulillah we manage here - but before he left he promised me and our siblings that once he was settled he’d help the family move to the US. Our parents even used their savings to pay for his studies back then. I just turned 25 and finally got my student visa too. It was so hard to get because of the current political climate, so I was over the moon and have been saving for my own tuition for years. I wanted to ask my brother if I could live with him inshaAllah, because my father won’t let me live alone in a foreign country. I was excited to FaceTime him and tell him the news. When I told him, he suddenly flipped out - yelling about how I should’ve asked him first, saying I’ll fail and I don’t belong there, accusing me of only calling for money (I never asked him for any). He hung up and now the whole family is shocked. He’s not the same brother we grew up with. Maybe he’s afraid of what his wife might think? She seems kind though. I don’t know what to do. Has anyone dealt with a sibling changing after moving abroad or marrying outside our faith? How do I approach him calmly and respectfully so we can talk this through without more anger? JazakAllah khair for any advice.