The laws are different for the US, where middle lane hogging is generally not illegal. However, all states stipulate that you must keep in the right lane unless overtaking, which is similar in spirit. Annoyingly, all but Florida then add an exception to this rule for highways with three lanes or more.

Middle lane hogging is mainly outlawed in the UK, who have correctly recognised it as being incredibly dangerous and a curse of congestion by preventing other people from overtaking.

Who, what, why: What's wrong with middle-lane hogging? - BBC News - https://www.bbc.com/news/magazine-2278498

KEEP RIGHT TRAFFIC LAWS IN ALL 50 STATES CHART (00214405).DOC - SLOWER-TRAFFIC-KEEP-RIGHT.pdf - https://www.mwl-law.com/wp-content/uploads/2018/05/SLOWER-TRAFFIC-KEEP-RIGHT.pdf