Earlier quoted context omitted.
> There is no way to dodge taxes as a US citizen by moving abroad Well, no way to "legally avoid"; "dodge" is broader, and there are probably many ways of dodging taxes that are easier if the institutions you deal with in your daily life aren't subject to US jurisdiction and regulations designed to expose tax evasion to US authorities. Also, typically you want to have at least one national citizenship, so if you are…
you still have to pay exit taxes on renouncing, so not clear this is a good way of avoiding tax.
excerpt[1]: If the Department of Homeland Security determines that the renunciation is motivated by tax avoidance purposes, the individual will be found inadmissible to the United States under Section 212(a)(10)(E) of the Immigration and Nationality Act (8 U.S.C. 1182(a)(10)(E)), as amended.
EDIT REPLY to : "Would they have to prove intent?"
Probably not because granting admission into the USA of a non-citizen (ex-citizen) is at the discretion of the Executive Branch of government and doesn't go through "due process" of any court system. So no "burden of proof" required.
[1] https://travel.state.gov/content/travel/en/legal/travel-lega...