Building a wall - and having Mexico pay for it - was a regularly repeated campaign pledge of Trump's.
The Trump Administration is reportedly considering making significant cuts to the budgets of the Transportation Security Administration, the Federal Emergency Management Agency (FEMA) and the U.S. Coast Guard.
Despite its size and scope, the proposal leaves unanswered how Mr. Trump would reach several of his most prominently stated goals, including the wall's prompt construction and the quick hiring of 5,000 additional Border Patrol agents and 10,000 new Immigration and Customs Enforcement officers. Mulvaney said that the figure comprises the president's request for $1.5 billion in a supplemental spending bill and $2.6 billion in his fiscal year 2018 budget.
Democrats have also warned that money for a border wall would be a non-starter, even threatening to shut down government if such a provision is included in the upcoming extension of a continuing resolution of government funding that expires in April.
Yet the budget proposal appears to fall short of early cost estimates for the wall's construction and maintenance, which could total as much as $21.6 billion, according to a Department of Homeland Security report last month.
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Trump's budget also proposes elimination of the United States Agency for International Development's (USAID) Complex Crises Fund. Tillerson said he thought overseas conflicts that the US has been involved in would diminish, easing the demands on State.
Unlike the American Health Care Act and President Trump's Cabinet confirmations, which only needed a simple majority of 51 votes, Republican senators will need 60 votes to end debate on the appropriations bill and get it passed - which means they need to get their party in line and win eight Democrats to their side.
Overall, the proposed budget, Mulvaney said, would increase defense spending by $54 billion and cut the State Department'a budget by roughly 28 percent. In the speech announcing his candidacy in June 2015, President Trump said, "The U.S. has become a dumping ground for everybody else's problems". He added: "It's really an issue that we feel strongly about in the Democratic Caucus".
Staying the rhetorical course and continuing, as Kelly promises, "vigilant" enforcement of immigration laws at the border could ultimately save the country billions by discouraging immigration and, perhaps, decreasing the perceived need for a wall. "And yet we've seen massive cuts apparently to pay for a wall that the Mexican government simply is not gonna pay for". Dubbed the "America First Budget", Trump says the increase will help members of the military "do only one thing: win".
Rep. Will Hurd (R-Tex.), whose district spans more of the border than any other, called a wall "the most expensive and least effective way to secure the border" in a January statement. Mexico's government has said it will not pay for a wall.
"My focus is on defense spending".