The US President has vetoed in Congress against the sale of $ 8.1
Donald Trump said the three resolutions would weaken America's global competitiveness "and damage his relationship with his allies.
It comes after both chambers of Congress voted to prevent the sale.
Some members of Congress They said they feared weapons could be used by civilians in the Yemen conflict.
They condemned Saudi Arabia's role in Yemen and the assassination of Saudi journalist Jamal Khashoggi last year.
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The Senate In a few days, a vote will be taken to override Trump's veto, said the Republican majority leader Mitch McConnell on Wednesday.
Analysts, however, believe that the Senate does not have the required two-thirds more it will be enough.
This is the third time Mr. Trump has used his right of veto since taking office.  In May, the White House issued a National Emergency Declaration to circumvent lawmakers and enforce arms sales.
At the time Mr. Trump said he had made the decision because of the Iranian threat.
But the movement sparked fierce opposition on Capitol Hill to those fearing that Saudi Arabians' weapons could be used against civilians in Yemen
Legislators, including some Senate Republicans, said that there is no legitimate reason to bypass Congress.
With his veto, however, Trump suggested that the sale of US weapons could prolong the conflict in Yemen and that "without" precision-guided ammunition, more – not less – civilians are likely to be victims.
He also insisted that Saudia Arabia and the UAE be a "bulwark against the evil activities of Iran and its deputies in the region."
] Tensions between the US and Iran have increased sharply since Trump has taken the US out of an agreement between Iran and the world powers to stem the Iranian nuclear program.
The US said they shot down at least one Iranian drone last week and blamed Ir for one of a series of attacks Tankers in the Gulf Iran fired a US drone in June.