You might get a letter like that. Or perhaps they will hold it at the local office.

Yes, it is permissible to have more than one immigration status.

A person has to be in the U.S. to file for adjustment of status. To get the visa outside of the U.S. one must consular process. We have clients...

There is no immigration line for domestic flights. Still, traveling in the U.S. without any valid immigration status can very well be risky.

Marriage based is much, much faster than employment based.

Perhaps. If he entered the country legally and he is under 21, he can adjust in the U.S.

You can get a divorce. Just make sure that the CIS branch handling the I-485 knows you have an approved I_360. See a divorce lawyer regarding the...

Your son may or may not be a derivative US citizen. Probably not and most likely you need to file an I-130 for him, as well as for your husband.

Adjustment based on a petition from a US citizen spouse requires only that one show a lawful admission to the U.S.

Yes, your US citizen sister can file a visa application for you. But it will be about 15-20 years or more before the visa is available. You may...