How long does it take to remove conditions and send new green card?

Mostly between 6 to 12 months if there's no RFE.

If a Jamaican became a naturalized citizen And got convicted of a felony (marijuana ) can they travel back an forth to jamaica

American citizens are not subject to the inadmissibility grounds of immigration law.

Remove of Condition for Legal Permanent Resident

Seems to me you have really good evidence. It may be a good idea to consult with an immigration attorney to assist you.

Current wait times to get interviewed?

How soon an interview is scheduled usually depends on the workload of the particular consulate in relation to interview schedules. There's no way...

This issue comes up fairly frequently in the context of a spouse abroad. I suggest that the return be amended to reflect a proper filing status. In...

If I divorce the Perm Res. I sponsor,can stop being his sponsor? Citizenship or 40 quarters with IRS? How many years is 40 qrts?

Divorce does not terminate the I-864 obligations. 40 qualifying quarters is usually 10 years. You may want to talk to a divorce attorney about...

Ceac.state.gov shows status :- petition has been returned to USCIS for administrative action and is no longer at the NVC

Call the NVC at (603) 334-0700 to find out exactly what is going on with the petition.

EMPLOYMENT AUTHORIZATION DOCUMENT process

I suggest calling Customer Service to put in an Expedite Request. This link provides USCIS expedite criteria and I believe your situation falls...

I'm not aware of any Consulate where the petitioner is required to attend. If in doubt, call or email the Consulate to be sure.

Can I return to the U.S. from Beijing, Mainland China with an expired green card?

He should file the I-90 and attend his biometrics appointment before he leaves. Usually at the biometrics appointment he'll get an extension for...