Yes, electrically, the US is the Wild, Wild West.
As stated, 2.2KW is not practical with our standard 15 amp 120V 1ph wall socket power. 20 amp devices require a special plug on the machine and a matching receptacle, type Nema 5-20P.
Industrially, 208V 3ph is not common, only in the New York metro area. Overall the states, 460-480v 3ph is the standard for machinery. 220-240v single phase is available but not common as it usually requires a transformer in 460/480 facilities.
For the industrial market, not residential:
There are no motor efficiency requirements when controlled with a vfd. Motor salespeople will state otherwise but the Dept of Energy requirements are for direct-across-line motors only.
No EMC requirements here for industrial settings but CE 2nd environment filters are good to include if you can.
UL listing of the machine is not required but a control panel mounted on the machine may be required to meet the UL 508 standard, depending upon were the machine is installed. In large cities, for example, New York, Chicago (actually, all of County County) and Los Angles are examples of where you may not be able to get a permit for an electrical connection without a UL label on the machine. It depends on many factors but know that if your machine can meet the CE/EN machinery and low voltage directives, it should meet UL requirements when UL listed components are used. In those specific markets, you’ll need a licensed shop in US to create a UL file for the device and place the required label UL on the electrical panel.