Think of this service basically for the same purpose as why Crye pants and stuff are manufactured domestically in the USA. But applied to circuit boards.

https://en.wikipedia.org/wiki/Berry_Amendment

More specifically there are a number of new wide-spanning bans on import of mainland china made drone components such as flight controller boards, ESCs, power distribution boards, motors.

The definition of "Blue UAS" pre-dates recent more aggressive changes made by the current US executive branch of the government, but is still relevant:

https://www.google.com/search?client=firefox-b-d&q=blue+UAS+...