President Donald Trump has signed a sweeping executive order setting a 30-day deadline for drugmakers to lower the cost of prescription drugs in the U.S.

President Donald Trump signed a sweeping executive order Monday morning that promises to crack down on “unreasonable or discriminatory” practices by foreign countries that result in Americans paying far higher costs for prescription drugs.

President Donald Trump announced that his administration would tackle rising drug costs in the United States by establishing “most favored nation” pricing which would base the U.S. prices of pharmaceuticals on the lowest prices paid by other foreign nations.