For example, in Virginia, it is explicitly lawful to pass on the right on a multi-lane highway, Code Virg. § 46.2-841, available at https://law.lis.virginia.gov/vacode/title46.2/chapter8/secti... and explicitly unlawful to remain at the prevailing traffic speed in the passing lane when someone is trying to pass, Code Virg. § 46.2-842.1 ("The driver of the overtaken vehicle shall move to the right to allow the overtaking vehicle to pass as soon as the overtaken vehicle can safely do so."), available at https://law.lis.virginia.gov/vacode/title46.2/chapter8/secti... .