Any person who operates a system from the United States and any person who is a U.S. person shall not, directly or through a subsidiary or affiliate:

(a) Operate a system without a current, valid license for that system;

(b) Violate the Act, this part, or any license condition;

(c) Submit false information, interfere with, mislead, obstruct, or otherwise frustrate the Secretary's actions and responsibilities under this part in any form at any time, including in the application, during application review, during the license term, in any compliance and monitoring activities, or in enforcement activities; or

(d) Fail to obtain approval for a license modification before taking any action that would change a material fact in the license.