Straws might seem insignificant, but the plastic straw has come to symbolize a global pollution crisis over the past decade.

President Donald Trump on Monday signed an executive order aimed at encouraging the U.S. government and consumers to buy plastic drinking straws, pushing back efforts by his predecessor to phase out single-use plastics and tackle waste.

Trump said he thinks it’s OK to continue using plastic straws, although they’ve have been blamed for polluting oceans and harming marine life.