McConnell didn't frame the measure as a reproach to the president.
"We will be looking at a national emergency because I don't think anything's going to happen" concerning an agreement, Trump told reporters at the White House.
"No one has forgotten September 11, 2001, but sometimes we fail to remember what made is possible in the first place", said Sen.
That sudden declaration of a withdrawal from Syria - and Trump's claim of victory over ISIS - was news to American diplomats, military officers and lawmakers, who raised concerns that ISIS had not yet been defeated and that the withdrawal would leave USA allies in the lurch.
"It would recognise the danger of a precipitous withdrawal from either conflict and highlight the need for diplomatic engagement and political solutions to the underlying conflicts in Syria and Afghanistan", he said.
Why it matters: McConnell effectively forced Democrats to choose between implicitly siding with Trump and angering elements of their anti-war base. The United States and the Taliban have sketched the outlines for an eventual peace accord, a us special envoy said on Monday, but there was no sign the insurgent group had accepted key USA demands.
India Keeps Oil Trade With Venezuela
The API reported late Wednesday afternoon that US crude oil inventories rose by 6.6 million barrels for the week-ended January 18. Steered by Saudi Arabia, OPEC and its allies are cutting production to contain a global oil surplus and bolster crude prices.
Mr McConnell had warned of "the danger of a precipitous withdrawal from either conflict", reminding of the terrorist attack of September 11, and where Al Qaeda used Afghanistan as a safe haven to plan an attack against the United States.
In late January, the House overwhelmingly passed a measure to prevent Trump from using federal funds to execute a withdrawal from North Atlantic Treaty Organisation.
Trump also promised to withdraw about half of the close to 14,000 USA troops stationed in Afghanistan.
On Thursday, a majority from the US Senate voted in favour of Mr McConnell's amendment and in rebuking the White House policy.
Danielle Pletka, a senior vice president at the conservative American Enterprise Institute, said lawmakers are doing exactly what they should - asserting themselves as a separate but equal branch of government that has been largely dormant on foreign policy. He said of the message it sends to Trump: "That we're a coequal branch of government and have coequal responsibility for foreign relations". Brian Schatz, D-Hawaii, one of many senators angling for Congress to debate and pass a new authorization to replace the 2001 measure under which the United States invaded Afghanistan.
A Washington Post-ABC News poll during the shutdown found 66 percent of Americans opposed Trump using emergency powers to build the wall without approval from Congress, 12 percentage points higher than opposition to the wall in general.