The next President needs to ignore any Obama pardons and prosecute them anyways. The way things work here in the United States, if a Federal Prosecutor wants you, you will be got, one way or the other.
If you beat one charge, they can file another. If you beat that one, they can file another still. They can keep you on the radar and interpret every thing you do as a violation, and keep filing charges.
The presidential pardon power is absolute, clearly spelled out in the Constitution. It cannot be overridden by any means.