I'd spin this the other way round, even in the US it is unlawful to not disclose that you are advertising:
From your link:
> In the U.S., the Federal Trade Commission said in 2017 that influencers on social media sites such as Twitter and Instagram “should clearly and conspicuously disclose” any paid work to promote a product or service.
Sponsored posts should be clearly labeled, at the very least
From your link:
> In the U.S., the Federal Trade Commission said in 2017 that influencers on social media sites such as Twitter and Instagram “should clearly and conspicuously disclose” any paid work to promote a product or service.
Sponsored posts should be clearly labeled, at the very least