The budget includes an $8.6 billion request for funding to build a wall on the southern border, according to an administration official.
The demand for wall funding is more than six times what Congress allocated for such projects in each of the past two fiscal years, and 6% more than Trump has corralled by invoking controversial emergency powers. The budget plan will also assume continued robust economic growth in the U.S.
Trump's $8.6 billion in proposed wall funding for fiscal 2020 would include $5 billion from the Department of Homeland Security budget and $3.6 billion from the Pentagon's military construction budget.
"Congress refused to fund his wall and he was forced to admit defeat and reopen the government".
The administration has not estimated how far the 2019 funds will go, but officials said average costs are about $25 million per mile (1.6 km).
Kudlow says "there's no reason to obsess" about the budget deficit, even as it approaches $1 trillion, as long as it remains below 5 percent of the overall economy.
President Donald Trump's 2020 budget seeks a return to what the administration calls "fiscal sanity", cutting spending while focusing federal funding on defense and the U.S. -Mexico border.
On Monday, President Donald Trump is set to deliver his first budget roadmap under a divided government with Speaker Nancy Pelosi at the helm of a Democratic-controlled House, and he is expected to face fierce resistance to severe proposed cuts on education, health and environmental protections.
Democrats, who oppose the wall as unnecessary and immoral, control the House of Representatives.
"This budget shows that we can return to fiscal sanity without halting our economic resurgence while continuing to invest in critical priorities", Russ Vought, the acting OMB director, said in a statement. The standoff over the wall led to a 35-day partial government shutdown, the longest in US history.
That means some departments and programs may see steeper proposed cuts than 5 percent.
In February, Trump declared a national emergency at the border, a maneuver that the White House claims would allow him to divert funds from other agencies.
To avoid another government shutdown, Congress will have to pass the 2020 budget by October 1, when the 2020 fiscal year starts. In doing so, he can potentially tap an additional $3.6 billion from military accounts and shift it to building the wall.
Workers and US border patrol officers stand next to an excavator working in a section of the new wall between El Paso, Texas, in the United States and Ciudad Juarez as seen from the Mexican side of the border in Ciudad Juarez, Mexico, Feb. 5, 2019.
But the declaration has been blocked in the House, and the Senate must vote on it this week.
Trump's Monday demand will reportedly include cash to hire another 2,800 United States law enforcement personnel and an additional 100 "immigration judge" groups, according to The Hill.