NO, unfortunately it did not work for me in New York (with Sunrise SIM card). The problem is the frequencies in the USA. It is not as simple as here with 900/1800 etc. Various US providers such as T-Mobile use the so-called AWS, which is a dual frequency. Mostly 1700+another frequency. Because it didn't work in New York doesn't mean it might not work somewhere else. USA has lots of different frequencies :-(
A great site to check is https://www.frequencycheck.com unfortunately there are not really MiFi's listed, but you can at least look at frequencies and compare them yourself.
Here are the bands that the M7200 supports https://www.tp-link.com/uk...