Because they can. U.S. law and governance structures turn out to be completely broken. Hackable by the first administration that tries.
Paraphrasing Garry Kasparov from 2016: "The US is about to find out that it's democracy has been running on the honor system"
Paraphrasing Garry Kasparov from 2016: "The US is about to find out that it's democracy has been running on the honor system"