It will cause a knock-down, drag-out fight between Democrats and the White House, with no compromise on the horizon, they said.
Medicaid cuts will be replaced by block grants to states - but critics say this would amount to cuts in services as states would be expected to fund spending over-runs from their own budgets. "I remember the president said he would not cut healthcare programs, but he is proposing to do that with this budget".
The proposal aims to cut the budget deficit by about $2.7 trillion over 10 years and balance the budget in 15 years.
These reductions are not that cut and simple, but it boils down to Trump once again breaking promises, which will have a devastating impact on the quality of life in the nation, particularly for those who depend on a strong social safety net. There are "many things in it that are harmful to working class voters and very few, if any, Democrats will find it appealing", he said. With the emergence of the budget plan, both the Democrats and the Republicans have begun carving the fair share of messages. "President Trump hurt millions of Americans and caused widespread chaos when he recklessly shut down the government to try to get his expensive and ineffective wall", House Speaker Nancy Pelosi said in a joint statement with Senate Democratic leader Chuck Schumer on Sunday. "We hope he learned his lesson".
The Committee for a Responsible Budget said Trump's budget would add $10.5trn to the debt over a decade, and criticised the White House for what it called a "fantasy assumption" of 3% economic growth over that timeframe. Nevertheless, the budget also includes an additional $8.6 billion to construct walls right along the Mexican border.
Russ Vought, acting director of the Office of Management and Budget, said the budget helps achieve savings through lowering drug prices, rather than cutting Medicare benefits to seniors.
The White House has cited criminal gangs infiltrating the United States through the porous southern border. Social Security makes up the largest portion at $1.05 trillion. Bernie Sanders, I-Vt said.
While unlikely to pass, it won't stop each side from trading barbs in a bid to gain a political advantage.
The presidential budget also includes reductions to non-defense discretionary spending, requesting a 5 percent cut to the 2019 cap level. "Trump is acknowledging that the national debt is a big problem", Republican Strategist and TV news personality Ford O'Connell said.
Trump also tried to chop HUD's budget past year by 18.3% by having the state, local governments and the private sector to shoulder some of the financial responsibility. The budget proposal reflects a deep and bitter divide between the two parties.
Senate Budget Committee Chairman Mike Enzi opened a hearing on the Republican president's proposal with a broad attack on what he said was the growing, misguided view that US debt and deficits do not matter.