US Immigration from Slovenia

I (USC) am living with my husband in Slovenia while we wait for the spousal visa process/green card. I want to improve my credit score before we move so I recently opened a new credit card, but Im not sure how I will pay it from abroad.

I have transferwise, but from what Ive read, its not a good option for paying a credit card bill and I know that using my EU bank card would be very expensive.

Has anyone had success opening a U.S. checking account online from abroad?

Related to this, is there any way for my husband to start building credit before he gets a green card/SS number?

Thanks!

My husband and I recently decided that's it's finally time to reunite after nearly 2 years of being apart. I have been looking into travel restrictions for entering the US a lot, but am still confused as to how complicated it would be for me to travel. I am already vaccinated and plan on getting tested before my departure, I'm just having issues understanding how to prove that I'm eligible for entry. The US Department of State has posted on their website that noncitizens who are spouses of US citizens are not suspended entry, but I'm wondering how to go about that, what is the proof I need to present etc. Any help would be greatly appreciated.

https://travel.state.gov/content/travel/en/us-visas/visa-information-resources/covid-19-travel-restrictions-and-exceptions.html

Hello,

my name is Mitja Duh, I am a citizen of Slovenia, Europe, my wife is an USA citizen and she is pregnant with our 2nd child. Her due date is September 27th and she will have to have a C-section. Of course, she would need help with the baby after birth and we are wondering, if there is ANY WAY that I would be able to visit her in the USA, be there for the birth of our child and afterwards help her with the baby ...?

We would be so much grateful for any answer or insight on this matter.

Thanks to anyone who reads the question and answers, I so much appreciate your time.

Best regards,

Mitja Duh