Are means-tested benefits (Medicaid specifically) lawful for a permanent residents who entered US less than 3 years if issued ?

Your question seems to be more medical benefits based than immigration per se.

I managed to apply for B1/B2 Visa in my DS-160, but for a B2 Visa when scheduling an interview. Do I need to re-schedule?

It's usually a "B1/B2" type -- B1 alone is Business, B2 alone is Tourist. Call and find out if you need to reschedule to change specific category....

Can I apply for ESTA Visa if I already have applied for B1/B2 Visa?

Under ESTA you only have 90 days a year stay in the U.S. (as member of a visa waiver country). With a B1/B2 you could get an I-94 to stay in the...

I came to us in December as F2.I got a chance to do Ms.If I go back homecountry to change status to f1,should embasy change it

An updated/new I-20 from the school with a Form I-539 would enable you to change status to F-1. The U.S. Embassy would still need the I-20 from...

If your old employer withdrew your H1B five years ago and USCIS revoked it upon the withdrawal, then you have been out of status for that length of...

I came to the US with F1 visa. After I got married with an international student, I applied for an F2,

Your name being on your husband's I-20 as dependent does not help you because you need to ve in valid status independent of his F-1. You need an...

L1B/L2 visa expired, Applied for I94 extension, Waiting for decision .If spouse L2 travel, will it impact our decision?

Your spouse can travel BUT will not be allowed back into the U.S. until extension is approved and the appropriate entry visa obtained from U.S....

Can a L2 EAD renewal applied before L1A extension is valid or be used after L1A approval?

See my answer to your question posted earlier.

Can a L2 EAD renewal applied before L1 extension is valid or be used after L1 approval?

Your L-2 based EAD is directly linked to your L-2 status. You should have filed to extend your L2 status with your spouse's L-1 extension...

Can a L-2 visa holder stay in the U.S., while L-1 visa holder is on vacation out of the U.S.?

Yes, he can stay on in the country in his L-2 status as long as you still have valid L-1B status. Your employment not being terminated during your...