The announcement from the US Trade Representative provides instructions for public comment and hearing attendance request. It doesn’t appear that regulations.gov is currently updated in order to submit comments or request attendance at the hearing, though we will send a message out as soon as it is. You can check at https://www.regulations.gov/ and enter docket: USTR-2019-0004.

California Consumer Privacy Act: Notice at Collection
Air Tiger Express (USA), Inc. California Consumer Privacy Act: Notice at Collection AIR TIGER EXPRESS (USA), INC. (hereinafter referred to as “we,” “our,” or “us”)