I am a citizen of Belgium and I filed a marriage based I-485 a few months ago, I received a letter from USCIS

It happens now and then but is rare.

I-130 related question:

And I'm confused. Why didn't he follow to join you as your husband? As for the I-130 it takes s out a year and a half to process.

Will USCIS investigate what you said at the border after the immigration interview?

They can. But if you have a real marriage it's explainable but I'd take an attorney with me.

Next step regarding my own status with mother as petitioner

Wow. It would be best to talk this out as I could type forever. Yes mom can petition you as a green card holder but you are not in status so it...

Got 212(6)(c)(1) during my h1b interview

He applied for you? What did he put in the waiver package? This is strange.

What is the best course of action for applying for a green card after marriage to a USC?

You can marry now and process the green card before going to Argentina. Your way is harder.

What should I do now ? and how will that affect my interview ?

Hopefully you gave a copy to the asylum office and that should be ok.

Very complicated. You need to directly consult with an attorney who handles these cases. We handle complicated cases like this. But I would want to...

I-130 sent to the local office by uscis

You are ok. This is normal to get the case processed ASAP.

Reentry Permit

Your permit will help you to return to the US this time within The two years but after that please understand that you will need to spend as much...