You don't state what US status your friend has. Depending on that and the particulars of the conviction, he may have a problem.

Sounds like you haven't even completed the Lawful Permanent Resident application (I-485). If you had a good lawyer, they may ask for the case to...

HI I AM UNDER TEMPORARY PROTECTED STATUS AND I WOULD LIKE TO KNOW HOW I CAN GET A GREEN CARD?

Your TPS is totally irrelevant to whether you are eligible for a green card. You need an attorney to analyze your facts, then he/she can tell you...

Can I get my marriage annulled , he married me for green card only and we are separated for more than 3 and a half years now?

You could go to USCIS and explain and that will certainly get their attention... deportation proceedings will follow.

Motion to reopen after withdrawal of I-130.

If he withdrew you have problems. Hire an attorney to dig into the facts.

Adjustmen of status and marijuana use

Hire an experienced attorney before the beneficiary sees anyone.

601waiver

Contact USCIS or hire an attorney to help.

Not taking US citizenship though qualified via GC. Will this affect to get visitor visa to US in future ?

You may have already abandoned your present green card as you're expected to live/work/pay taxes in the US. If you've been outside of the US for...

Should I appeal or refile new i130 after I received final note of intent to revoke was issued for sham marriage ? Please help !

Sound like you need to remarry as the first 'marriage' to your present 'spouse' was void as you cannot marry two people at the same time. Then...

I need an explanation of this quote please "the government bears the burden of proof in showing the marriage was not bona fide"

The government is alleging the marriage is not real. You need proof that it is/was. You also need an experienced immigration attorney who...