One day Overstay on H1-B Visa without valid petition

You will likely fall within the 10 day grace period, however, the person you should discuss this with is the attorney filing the petition on behalf...

What to write as a port of entry??

Submit both in an attached explanation.

H4 pending over 7 months, USCIS processing time goes beyond requested date. Can I file another H4 with H1 extension under PP?

You should discuss with the attorney handling the H-1B filing. A trip outside the US may clear up the issue but talk with your attorney before travel

If the plane does not go foreign it is a domestic flight.

What do I attach on the online N-400 and how do I pay the application fee?

If you are not clear on what to do consider using the paper filing.

L2 EAD and visa extension

L-2 visa holder spouse can not work in the U.S. before getting the EAD approved. EAD for L2 spouse is valid up to 2 years at a time. EAD can be...

Is it a good sign ?

Unable to determine as you do not provide enough information about the type of visa you are seeking or the contents of your filing.

What if I missed the 60 days after graduation deadline? Will they reject the request automatically or it will take 90 days?

See your designated student adviser if you are interested in OPT.

Will I be held back at the US border ?

Have an immigration attorney review the misdemeanor conviction record before departing.

Deportation ( absentia) IS my husband have a path way to any legal status in the US

A pathway may be found for persons in such situations as you describe. The process normally takes several years to unwind. You should have an...