President Trump has a plan to stop the HIV epidemic by 2030. It’s an ambitious and worthy goal that some people seem to think is unattainable.

However, the Trump administration is already chipping away at the epidemic and improving the prospects for success by using one little-known tool in the president’s arsenal: The 340B drug discount program, which costs taxpayers nothing but helps ensure access to HIV-related medications for vulnerable populations, including many core voters in Trump country.