Care Act. I felt like it was a statement that we were going to put some things in the rearview mirror." In 2013, he said that he agreed that changes to the ACA should be debated, but criticized Republicans for "wrapping them up with the threat" of a federal government shutdown. In 2018, Kaine and Senator Michael Bennet proposed the creation of "Medicare X"—a public health insurance option modeled after Medicare that would be available on ACA health insurance marketplaces along with private options. The proposal is a more incrementalist alternative to Bernie Sanders's push for "Medicare for All" (single-payer health care). In December 2018, Kaine was one of 42 senators to sign a letter to Trump administration officials Alex Azar, Seema Verma, and Steve Mnuchin arguing that the administration was improperly using Section 1332 of the ACA to authorize states to "increase health care costs for millions of consumers while weakening protections for individuals with pre-existing conditions." The senators requested the administration withdraw the policy and "re-engage with stakeholders, states, and Congress." In January 2019, Kaine was one of six Democratic senators to introduce the American Miners Act of 2019, a bill that would amend the Surface Mining Control and Reclamation Act of 1977 to swap funds in excess of the amounts needed to meet existing obligations under the Abandoned Mine Land fund to the 1974 Pension Plan as part of an effort to prevent its insolvency as a result of coal company bankruptcies and the 2008 financial crisis. It also increased the Black Lung Disability Trust Fund tax and ensured that miners affected by the 2018 coal company bankruptcies would not lose their health care. In December 2016, Kaine was one of 17 senators to sign a letter to Trump asking him to fulfill a campaign pledge to bring down the cost of prescription drugs. In February 2017, he and 30 other senators signed a letter to Kaléo Pharmaceuticals in response to the opioid-overdose-reversing device Evzio rising in price from $690 in 2014 to $4,500 and requested the company provide the detailed price structure for Evzio, the number of devices Kaléo Pharmaceuticals set aside for donation, and the totality of federal reimbursements Evzio received in the previous year. In February 2019, Kaine was one of 11 senators to sign a letter to insulin manufacturers Eli Lilly and Company, Novo Nordisk, and Sanofi about increased insulin prices and charging