There have also been legislative attempts at enacting environmental change by farmworker groups. In 2017, a coalition including the United Farm Workers (UFW) has challenged the Environmental Protection Agency's reversal of a previous law to ban the pesticide chlorpyrifos; according to studies conducted by the EPA, exposure to chlorpyrfios, even at very low levels, can damage children's brain development and cause other brain-harming effects. The chemical was banned in 2000 for most household settings but is still used on some crops. Many environmental groups have since come out to condemn the choice of the EPA to reject the pesticide ban. The coalition has called for Administrator of the Environmental Protection Agency (EPA) Scott Pruitt to reinstate the planned ban.