Also in the room for the veto signing Friday were parents of children who were killed by immigrants who entered the country illegally, as well as Vice President Mike Pence, DHS Secretary Kirstjen Nielsen and Attorney General William Barr.
U.S. President Donald Trump holds up his veto of the congressional resolution to end his emergency declaration to get funds to build a border wall after signing it in the Oval Office of the White House in Washington, U.S., March 15, 2019.
It is the first time in his two years in office that Trump has used his presidential veto power to block legislation and comes after a dozen Senate Republicans joined Democrats to rebuke Trump's use of his national emergency power to bypass Congress and fund construction of a border wall.
The Republican senators who rebuked Trump were unwavering in their justification, saying Thursday they viewed the unilateral move as unconstitutional and creating a unsafe precedent for future presidents.
The veto would be the first of Trump's presidency.
He blasted the "dangerous" and "reckless" resolution passed by Congress that, "if signed into law, would put countless Americans into danger, very grave danger".
While Democrats control the House, they would need a total of 67 votes in the Senate to override Mr Trump's veto. "Think of that", he said.
Trump originally declared a national emergency on the border last month after Congress granted only a fraction of the $5.7 billion he requested for a wall on the border.
The resolution was approved in the aftermath of the killing of US-based Saudi journalist Jamal Khashoggi in the Saudi Consulate in Istanbul on October 2, 2018.
"As president, the protection of the nation is my highest duty", Mr Trump said on Friday.
Trump made a border wall a central promise of his 2016 campaign for the White House.
"Many such emergencies dealt with matters less threatening than the ongoing crisis on the southern border". He cited "thousands and thousands" of gang arrests and claimed numerous asylum seekers released into the US were "stone-cold killers", ignoring data that shows immigrants are less likely to commit crime. Against the advice of GOP leaders, Trump invoked the national emergency declaration last month, allowing him to try to tap about $3.6 billion for the wall by shuffling money from military projects, and that drew outrage from many lawmakers. ".THIS SHOULD NEVER HAPPEN TO A PRESIDENT AGAIN!" the President of The United States literally just typed on Twitter with the world at his window sill. Trump had campaigned for president promising Mexico would pay for the wall.