Negotiators aiming for an international treaty to curb plastic pollution are set for fierce debate on the last day of scheduled talks, as over 100 countries supportive of a pact that would cap plastic production face off against a handful of oil-producing countries who want it focused just on waste.

The U.S. is among 175 nations haggling over a treaty to reduce the vast quantity of plastic pollution that ends up in our food, water and even our bodies.

The world’s nations will wrap up negotiating a treaty this weekend to address the global plastic pollution crisis. Their meeting is scheduled to conclude Sunday or early Monday in Busan, South Korea,