Democrats are taking aim, in particular, at efforts in the proposal to eliminate the deficit over a 15-year period by cutting domestic spending and reining in how much funding goes to Medicaid and Medicare.

That includes capping or block-granting Medicare benefits, adding work requirements to medical and anti-poverty programs or implementing changes that lower the costs of Medicare and Medicaid.

Those would result in a $700 billion cut to Medicaid, though the administration said the decline in projected spending was the result of savings and efficiencies.

Sen.(I-Vt.), a 2020 White House hopeful and the ranking member on the Budget Committee, blasted Trump's proposal as an "immoral document" and pledged that it would be "rejected by Congress."