I entered the phrase "economic treason" in the Google AI search and got this reply:

"AI Overview "Economic treason" is not a specific legal charge or statutory crime in U.S. law, but rather a political and rhetorical term used to describe actions perceived as damaging to a nation's economy . Legally defined treason is far more narrow. Rhetorical Use The phrase is often used in political discourse to criticize a wide range of actions, including:

Policies that lead to job losses or industry decline (e.g., specific trade agreements or a lack of protectionist measures).
Corporate decisions, such as a lack of hiring or moving operations overseas, that prioritize profit over national good.
Corruption or economic sabotage within a country.
Opposition to a particular government's economic policies, such as specific tax laws or infrastructure projects. 

Legal Context In the United States, the definition of treason is specifically and narrowly defined in the Constitution to prevent the abuses of the charge that occurred in English history.

Definition of Treason: Article III, Section 3 of the U.S. Constitution states, "Treason against the United States, shall consist only in levying War against them, or in adhering to their Enemies, giving them Aid and Comfort".
Proof Required: A person cannot be convicted of treason unless there is the testimony of two witnesses to the same overt act, or a confession in open court.
Other Laws: Actions that might be described as "economic treason" in common parlance are typically prosecuted under other federal laws, such as the Espionage Act or the Trading with the Enemy Act, which do not carry the strict constitutional requirements of a treason charge. 

While some countries like Algeria have definitions of treason that include "sabotage to public and economic utilities," the U.S. legal system separates actions related to economic harm from the specific crime of treason."

So, unfortunately, Rosie can't be charged with "economic treason" but maybe she can be refused re-entry to the US. Let her stay a person without a country for the rest of her miserable fat life.