The Wikipedia article says that Trump called the FCPA a "horrible law" but Jeff Sessions says he'll continue to enforce it.

Which means "selective enforcement".

All laws are selectively enforced.

What part about "Jeff Sessions" didn't you get?

The dude is pretty fanatical when it comes to enforcing the law. I don't think he understands what "selective" means.

Enforcing the law like not committing perjury during his confirmation process?

I didn't say he was good at doing the job consistently, just that he seems pretty fanatical about enforcing it. I can see him ignoring the political side of things and enforcing laws very comprehensively depending on how it fits his ideology and the mood he's in that day.