"Under Chevron, if a judge found that the agency had made a reasonable interpretation of an ambiguous congressional directive, they were obliged to defer to the agency’s interpretation of the law, effectively ending any substantive review of a challenged rule. The repeal of Chevron is a huge blow to regulators, evidenced by the fact that the decision had been cited more than 18,000 times over 40 years."

the Chevron Doctrine is new to me; it appears that the parent comment was not answering "why was it banned internationally" but rather emphasizing weakness in US procedures