As Jonathan Zittrain, an Internet expert at Harvard who has served on an ICANN advisory committee, observed in 2014 after the Obama White House issued its transition plan, ICANN had virtually no authority over how Internet users behaved online. You could register the website www.gap.clothing “through an ICANN-approved process,” he wrote; but ICANN would have no jurisdiction if you “sell fake Gap clothing on your website goodclothes.clothing.”

Source: No, Mr. Trump, the U.S. is not turning over control of the Internet to Russia and China – LA Times