The additional $8.6 billion - combined with funds from the emergency declaration - will allow the completion of 722 miles of barrier construction, a long-sought goal by the Trump administration.
The request, which is to be unveiled Monday, would far exceed the 5.7 billion USA dollars Trump demanded past year, which led to an impasse that resulted in a 35-day partial shutdown of the US government, the longest ever.
The plan sticks to budget caps that both parties have routinely broken in recent years and promises to come into balance in 15 years, relying in part on economic growth that may be uncertain.
The $8.6 billion request is part of the president's 2020 budget, which will land on Capitol Hill on Monday. Many Democratic leaders have said they will oppose the sweep of the White House's proposed budget cuts, though White House officials have signaled they plan to fight over the budget much harder this year, believing it provides a sharp contrast between Democrats and Republicans heading into the final year of Trump's first term. Kudlow also said he was confident economic growth would top 3% in 2019 and beyond. Others have predicted lower growth.
Budget proposals are merely a starting point in negotiations, but Democrats immediately rejected the border request.
"The same thing will repeat itself if he tries this again", they said in a joint statement.
"We're making great progress", Larry Kudlow said on "Fox News Sunday", adding that he was "optimistic" President Donald Trump and President Xi Jinping of China would meet to ink a trade pact at some point - possibly in March or April.More news: Under Armour unveils Curry 6 shoe for girls
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The budget arrives as the Senate readies to vote this week to terminate Trump's national emergency declaration.
The emergency declaration was roundly criticized by Democrats, joined by a handful of Republicans, who said it represented a possibly unconstitutional overreach of presidential authority.
Several Republican senators took issue with how the president made his move, arguing Trump violated the line that separated the powers of the executive and legislative branches when he declared a national emergency. But neither chamber appears to have the votes to override a promised presidential veto.
Following the rejection of his last wall funding demand, Trump declared a national emergency and redirected $601m in treasury forfeiture funds, $2.5bn in defense department drug interdiction funds and $3.6bn from a military construction budget.
Trump invoked the emergency declaration after Congress approved almost $1.4 billion for border barriers, far less than the $5.7 billion he wanted.
Kudlow said daily negotiations between USA and Chinese officials have been progressing following face-to-face talks in Washington roughly two weeks ago, after which Trump extended a March 1 deadline for increasing US tariffs on $200 billion in Chinese goods.
In total, Trump has secured $8.1 billion for the project, enough to build approximately 324 miles of wall, using an average cost of $25 million per mile estimated by officials.
Whilst electioneering Trump repeatedly promised that Mexico would pay for the wall.