The ICC is attempting to have arrest warrants enforced through cooperation with states that are parties to the Rome Statutes for claimed offenses by citizens of countries that are not party to the Rome statute. The US views this as an attack on sovereignty essentially and essentially has decided to retaliate by imposing sanctions.
> The ICC merely issues documents; everybody is free to agree or disagree with their documents. They have no power of enforcement whatsoever. The US here is taking action.
The ICC issues documents that Rome Statute signatories have agreed to enforce(whether they actually enforce in practice is another matter. Regardless it seems pretty clear that the US considers any threat of enforcement to be sufficient grounds to impose sanctions against the organization they view as attacking it.
> Can you point me at any action that the ICC has taken in the United States?
The ICC has made it difficult for the head of government of a strategic ally of the US to travel to many countries at a time when that ally is under attack by many other countries. The ICC has in effect threatened to do the same to US citizens as well. There's a bit more nuance than this but it's not hard to see why the US views the ICC as a real threat worthy of sanctions. This is not really a new thing either, the US has even strong-armed many countries into signing "Article 98 agreements" in order to ensure ICC doesn't have jurisdiction over US citizens.[0]
[0] https://en.wikipedia.org/wiki/United_States_and_the_Internat...