He says, "this is a short term funding, but it's immediate".
He says building his signature border wall "is all about National Defence".
A veto would have created another government shutdown.
SNELL: This is - yeah, this is absolutely not how things normally go with any kind of legislation, let alone a spending bill.
He touted the increase Friday as the biggest in history and said that the United States military "would be far superior than any military in the world". The military spending is a US$66 billion increase over the 2017 level, and the non-defense spending is US$52 billion more than past year.
Mattis quoted George Washington in saying that "to be prepared for war is one of the most effectual means of preserving peace".
The White House and Republicans had reportedly offered Democrats a Daca extension of up to three years in return for full funding of Mr Trump's wall.
In his remarks Trump addressed the veto, saying it was the military spending plan that finally convinced him to get on board with the bill.
Other senior Republicans began making their own Twitter pleas urging Trump to sign the bill.
The official spoke on the condition of anonymity to discuss internal deliberations.
"The chances of Republicans maintaining control of the House of Representatives declined by about 25 percent today - the bill is that bad". Since then, bipartisan proposals that would have provided permanent protections for Dreamers have been shot down by Trump.
Still, he voiced disdain for the hasty way the bill was passed.
La sorpresa del último tráiler de Deadpool 2
Crews ha revelado su papel como el mutante electromagnético Bedlam , pero los otros dos mantienen sus partes en secreto. Domino , interpretado por Zazie Beetz , aparecerá como otro héroe joven hosco.
The brand new piece, which was released on Friday, touches on the incessant White House firings and staff member exits, Michael Wolff's "Fire and Fury", and Vladimir Putin in typical Simpsons fashion, by tackling the topics in the most satirical way possible.
Trump's comments came just hours after he tweeted the possibility that he could veto the bill.
A presidential veto would likely result in a government shutdown when most federal funding authority expires at midnight Friday.
As the six-month spending deal was coming together, there had been reports Trump had balked at the deal and had to be persuaded by Ryan to support it. Mark Walker (R-N.C.), chairman of the conservative Republican Study Committee caucus. Telegraphing the outcome, an internal television feed advertised the event this way: "President Trump Participates in a Bill Signing".
Initially, it had been a foregone conclusion that Trump would sign the ahead of a midnight deadline to keep the government running.
The measure includes almost $1.6 billion for border security, including new technology and repairs to existing barriers - but not the wall specifically, as he claimed Wednesday on Twitter.
He said in the tweet that young immigrants now protected in the US under Barack Obama's Delayed Action for Childhood Arrivals "have been totally abandoned by the Democrats (not even mentioned in Bill) and the BORDER WALL, which is desperately needed for our National Defense, is not fully funded".
Before the Senate's early-morning vote, Corker had complained about the process of rushing the bill through Congress.
Mick Mulvaney, Director of the Office of Management and Budget at a White House press briefing in Washington on March 22, 2018.
"Is the president going to sign the bill?"
Asked about the president's tweet, White House spokesman Hogan Gidley said in a statement: "The tweet stands for itself".
"Shame, shame. A pox on both Houses - and parties", the Kentucky senator tweeted after the bill cleared the Senate.