House Speaker Nancy Pelosi, D-Calif., and Senate Minority Leader Charles Schumer, D-N.Y., added that Trump caused a government shutdown in December because he defied Congress and demanded a wall.
The request is far more than the $1.4 billion Congress allocated for wall construction in January after a standoff between the president and Democrats, which led to a five-week partial government shutdown. The same thing will repeat itself if he tries this again.
"If we don't have a strong military, you don't have to worry about debt, you have bigger problems", Mr. Trump said in a Rose Garden press conference where he declared a national emergency.
The budget does not make explicit whether the administration is asking Congress to consider converting Medicaid to a system of block grants once again - or whether it seeks to make such a switch on its own.
That would be on top of the US$6.7 billion in wall funding that Mr Trump has ordered redirected from other government programs under a national emergency he declared last month. The new proposal comes as the House is in Democratic hands and even congressional Republicans have largely turned their attention away from dismantling the ACA.
The White House claims its plan would balance the budget within 15 years-and that's only possible because the budget assumes 3 percent annual economic growth, a very rosy outlook.
The Senate, narrowly controlled by Republicans, is to vote on the same resolution this week.
White House officials say there are already 196km of barriers that have been completed or are under construction. He also said that Mexico would pay for it, though the Mexican government repeatedly has refused to finance the project. Some of that new spending-$506 million of it, to be precise-would be used to hire an estimated 2,800 additional law enforcement officers and critical support personnel at U.S. Customs and Border Protection and U.S. Immigration and Customs Enforcement.
The Mexican government has repeatedly said it has no intention of providing the money. Instead, he has insisted the money come from USA taxpayers, arguing that criminals, terrorists, and drugs are flooding into the United States from across the southern border.
He stressed the final version of the deal will go to President Trump who will decide whether it's good enough for the USA, and said he expects the upcoming trade deal to be "positive and bullish".
House Democrats have already called the plan dead on arrival, arguing that the proposal would leave the country less safe and secure with "no chance" of passing in the chamber that they control.
"I think the idea of having this massive OCO is not one that pretty much anyone takes seriously", he told reporters last week.
That's the reality that will greet Trump's latest budget, which probably will promptly be shelved after it's received by Congress on Monday.
"America is roaring back, and now is the time to invest in the future of America", President Donald Trump said of the newly released budget entitled, "A Budget for A Better America: Promises Kept".
The budget will also cut funding overseas.
It's a budget blueprint that Office of Management and Budget Director Russ Vought called in a Sunday night statement a return to "fiscal sanity".
He says the budget will contain a proposed 5 percent across-the-board reduction in domestic spending.
The White House budget calls for a number of new programs to reduce Medicare spending, including by increasing audits of payments through Medicare Advantage, instituting new changes to reduce other forms of "fraud and abuse", and changing hospital reimbursement rates.