I got my H1B visa approved but COS denied. I'm in the US with H4 visa. I won't start working on Oct 1st - what do I need to do?

You need to go overseas and apply for an H-1B visa with your H-1B approval notice.

Just being pregnant does not give you a basis to remain in the U.s. and Medicaid is not an option and will hurt future visa options for you. ...

no advance parole is available to an H-4. since you have the H-4 you can travel on that status while your work card i spending. If you don't have...

If was approved H1B status while in the U.S. and lost my job, could I apply for F-2 on October 1?

you should be fine as an F-1 has a 60 day grace period anyway at the end of your cap gap. You will need to wait for the marriage certificate.

minimal risk but don't do it if the marriage isn't real.

You will need to leave and return unless you can qualify for F-1 reinstatement. It is not a guarantee though that you will get a B-2 as you have...

Do I need to apply H4 visa?

no, you may remain as long as the new tear-off I-94 card in H-4 status is valid. If you do leave the U.S. though for vacation or otherwise you...

I-140 approved and my wife got EAD, if i leave my current employer is there any impact to my spouse's EAD?

The regulation says not unless the I-140 is revoked for fraud but if you don't have an I-485 pending then you will need to start the PERM and I-140...

I am a permanent resident *green card holder) parent of a US citizen adult child who sponsored me to immigrate.

you will need to wait 4 years and 9 months from the date you became a permanent resident assuming you meet all of the tests for physical presence,...

What if H4 petition for my B2 wife is not approved within 6 months

She will be legal to remain here as long as the petition is on file before the date on her I-94 card expires.