Cutting taxes and certain programs at the federal level does not preclude them being assumed at the state level. As the U.S. is a federation of states, more of these programs could be handled by the individual states themselves. Under the 10th amendment, the states retain the right to provide for public health and safety of which environmental protection and health care fall. Of course that would just mean a lowering of federal taxes and a raise of state taxes. There is also something to be said about greater efficiency and economies of scale of having some of these services provided by the federal government and Americans have seen the ineffectiveness of some states in handling their health infrastructure like water (e.g. Michigan). It would however allow Trump to be able to say he fulfilled his election promise of lowering taxes by downloading more services on to the states. Many American's don't approve of a large federal government anyway.