AG​ Mayes co-led a coalition of 24 AGs in filing a lawsuit to block President Trump’s latest efforts to impose illegal tariffs on American consumers and businesses. The case challenges President Trump’s most recent efforts to increase tariffs worldwide without congressional approval.

"After being rebuked by the Supreme Court for illegally taxing the American people, Donald Trump threw a temper tantrum and announced another round of illegal tariffs that will hurt Arizonans. Make no mistake—these tariffs are just another unlawful attempt to tax Arizona families and businesses without the consent of their elected representatives and they will drive up prices for every Arizonan.” – AG Mayes