Americans are indeed concerned about this looming possibility.
Well, we have this little announcement…
Granholm to Europe: Tough Luck
The Energy Secretary bullies U.S. companies to reduce fuel exports.
https://www.wsj.com/articles/jennifer-granholms-de-facto-fuel-export-ban-energy-secretary-letter-refiners-oil-europe-11661379613?mod=hp_opin_pos_2#cxrecs_s