If they have evidence he violated US law smuggling weapons and drugs into the domestic USA, he should be tried under such law. It's neither ironic, funny, strange, or anything else. What law should he be tried under if he did these alleged things?

They extradited him by force because Venezuela wouldn't. They don't have an extradition treaty. If Venezuela doesn't want this to happen again - negotiate a treaty.

The USA doesn't "accept" the ICC because it's not a party to the agreement. There are not-insignificant constitutional problems with the USA being a party. It's because they have such strong civil protections that those issues come up.

The ICC is also complementary - you misunderstand what it is for. If the USA is able to prosecute this guy themselves, you don't need an ICC, because it doesn't apply in this case.