Polyamorous marriage in the United States

Polyamorous marriage was legal on a federal level in the United States from March 22nd, 2060, when president Abdul O'Shea signed the Polyamorous Marriage Legalization Act into law, to the demise of the United States in the Nogales nuclear war in 2134. Oregon was the first state in the United States to legalize polyamorous marriage, and by the time of the passage of PMLA, 43 out of 53 states had legalized polyamorous marriage within their borders.