More than 50 grams of meth carries a mandatory minimum sentence of 10 years.

Medical marijuana and probation?

It is a federal crime to use marijuana even for medical reasons. So it would violate your probation.

It could be his lawyer is waiting to get the discovery or waiting for a court dste. Everything is slow with COVID. Or he may be busy with other...

Will my arrest warrant eventually go away?

Arrest warrants do not go away. Eventually you will be arrested.

Does federal precedent trump state precedent?

Federal case law trumps on issues of federal law. State cases trump on issues of state law.

What does this mean

Methamphetamine is a controlled substance covered by the Controlled Substance Act.

Do you know anything about laws concerning nude pictures sent to Ghana?

If the nude photos are child pornography you can be prosecuted in the US. If they are not explicit photos of minors, they are probably not illegal....

If he owes the state time or has pending charges, he can be ordered to report for that case after he is released by the feds.

Can I pay a fine instead of time during COVID ?

The judge can decide to impose a fine instead of jail time, but most judges do not permit defendants to buy their way out of prison.

They can correct the indictment when they find out the name is wrong. That is not a defense.