Headlining this year's 80th General Assembly will be Trump, who calls for slashing U.S. funding for the U.N., stopped U.S. engagement with the U.N. Human Rights Council, extended a halt to funding for the Palestinian relief agency UNRWA and quit the U.N. cultural agency UNESCO.

"Repealing the vehicle pollution standards would hamstring this growing industry, killing thousands of good-paying American jobs and ceding the future of global automotive leadership to China," the lawmakers wrote in a letter.