The devices use bait to lure wildlife before releasing deadly sodium cyanide into the mouth of any animal that takes a bite.
Environmental groups say the decision was purely political and could result in the contamination of water supplies.
The chemical belongs to a class of pesticides known as organophosphates which are used on more than 50 different crops.
"Donald Trump's undying loyalty to coal CEOs is literally killing Americans. Today's action provides yet another egregious giveaway to corporate polluters and fossil fuels," said 2020 candidate Jay Inslee.
"We are moving forward to address climate change," EPA Administrator Andrew Wheeler said.
This would not be the first time the Trump administration has tried to change the math in an apparent effort to justify its policy proposals.
He also received accepted six gifted copies of "The Lorax."
The president celebrated his second year in office by speaking out against climate change, tweeting about the cold weather on the East Coast before adding that it "wouldn't be bad to have a little of that good old fashioned Global Warming right now!"
"You are the nominee to be head of the Environmental Protection Agency. You just, in your opening statement, did not mention the words 'climate change,'" said Sanders.
Several studies have found evidence that exposure to PFAS can have negative health consequences in humans.
Furloughs have prevented staff from holding meetings on proposals to undo Obama-era environmental protections.
Republican dialogue on climate change has hit a five-year low, while Democratic messaging has soared, according to an analysis by public affairs software company Quorum.
Environmentalists fear most waterways will no longer be protected.
The smoke has created hazy conditions in locations as far east as Philadelphia.
The Camp Fire has burned about 113,000 acres, destroyed more than 6,700 homes and businesses, and claimed at least 29 lives.
Earlier on Tuesday, Donald Trump told reporters that "we'll be taking a little ethanol tonight" during a rally in Iowa.
Over a five-year period, Whole Foods and two other companies allegedly mishandled hazardous waste.
Rollbacks in air-quality regulations will cause a rise in heart disease, dementia and many other ills.
The Trump administration has revealed its plan to replace former President Barack Obama's Clean Power Plan—and it could prove deadly.
"The decision clearly shows that EPA – and by implication OSHA and other federal agencies – can't just delay a rule protecting the American people on a whim, or to do the bidding of some outside group."
Andrew Wheeler champions the deregulation of national automobile fuel economy and greenhouse gas standards for all new automobiles produced in the U.S.
Pruitt, who resigned as EPA administrator amid a number of scandals, is succeeded by an energy industry lobbyist.