The political nonprofit aligned with President Trump said Friday that it is readying a million dollar attack on Sen. Dean Heller for opposing his party’s proposal to partially repeal Obamacare.

The Nevada Republican said during a news conference in Las Vegas that he could not support the Better Care Reconciliation Act, introduced by Senate Majority Leader Mitch McConnell, R-Ky., on Thursday, because it would harm the expansion of Medicaid under Obamacare that was embraced by his state.