Before the presidential election, the EPA had proposed banning chlorpyrifos based in part on evidence that the chemical causes lasting harm to children’s brains, including attention problems, memory loss, tremors, and autism. In reports issued in 2014 and 2015, the agency acknowledged research showing that children exposed to chlorpyrifos were more likely to have certain developmental problems. In November the EPA issued a report recommending a ban. A 90-day waiting period pushed the finalization of the ban into March, after Trump’s inauguration.

https://theintercept.com/2017/08/18/epa-welcomed-industry-feedback-before-reversing-chlorpyrifos-pesticide-ban-ignoring-health-concerns/

Environmental Protection Agency (EPA) Administrator Scott Pruitt