would both regulate and tax marijuana production in addition to expunging all nonviolent marijuana convictions and expanding medical access to marijuana to every private and most federal health plans. The proposal also included research into the drug's health benefits being financed and allocating funds gained through taxes to both communities of color and women and minority-owned small cannabis businesses. Gillibrand admitted the positive effects that had come through marijuana's statewide legalization in Washington and Colorado, but asserted that "a state-by-state patchwork is not enough to tackle the deeply rooted racial, social, and economic injustices within our marijuana laws, or to fully unleash the economic equity and opportunity of marijuana legalization." Horse racing In June 2019, Gillibrand and Arizona senator Martha McSally cosponsored the Horse Racing Integrity Act, a bill that would form a national standard for drug restrictions, testing, and enforcement at venues for horse racing that presently operated under both varied and conflicting regulations of their respective states and establish the U.S. Horseracing Anti-Doping and Medication Control Authority to enforce drug bans and rules. The bill was introduced in the aftermath of a spike in racehorse deaths at various tracks that had stirred controversy from animal rights groups. Truck underride crashes In March 2019, Gillibrand, along with senator Marco Rubio and Representatives Steve Cohen and Mark DeSaulnier, introduced the Stop Underrides Act. The bill would require underride guards on both the sides and front of a truck in addition to changing standards for underride guards on the back of trucks. Gillibrand spoke of the enabling of Congress "to make simple and commonsense changes that would save lives on the roads" and said that the bill would "protect passengers and help keep our roads safer." Maternal mortality In May 2019, Gillibrand was one of six senators to cosponsor the Healthy MOMMIES Act, legislation that would expand Medicaid coverage in an attempt to provide comprehensive prenatal, labor and postpartum care with an extension of the Medicaid pregnancy pathway from 60 days to a full year following birth for the purpose of assuring new mothers have access to services unrelated to pregnancy. The bill also directed Medicaid and the Children’s Health Insurance Program's Payment and Access Commission report its data regarding doula care coverage under state Medicaid programs and subsequently develop strategies aimed at improving access to doula care. Opioids In February 2017, Gillibrand and thirty other senators signed a letter to