Others, like Sen. John Kennedy (R-La.) and Sen. "This is a different vote".
U.S. President Donald Trump says he will impose a tariff on all Mexican goods beginning June 10 if Mexico does not halt a surge in immigrants, mostly from Central America, crossing into the United States from Mexico.
McConnell remains hopeful that the Mexican delegation that traveled to Washington, D.C.to talk about how Mexico can help with the immigration crisis will be able to come to a resolution with the Trump team.
Now, the president doesn't have anywhere near the same backing for the tariffs. The Post's Nick Miroff explains the significance.
Mexican officials contended that an additional quarter million migrants could try to reach the US if the tariff is imposed, on top of the tens of thousands already reaching the southern USA border each month.
For his part, Trump said it would be "foolish" for Republican lawmakers to take action to block the tariffs.
At a lengthy closed-door lunch meeting at the Capitol, senators took turns warning Trump officials there could be trouble if the GOP-held Senate votes on disapproving the tariffs.
The tariffs have also been criticised by the US Chamber of Commerce and industry groups because of concerns about increased costs for American businesses and consumers.
It takes two-thirds support in the House and the Senate to overturn a presidential veto.
"Can you imagine Cryin' Chuck Schumer saying out loud, for all to hear, that I am bluffing with respect to putting Tariffs on Mexico", Trump wrote.
The Trump administration has listed three actions it wants from Mexico: strengthening its southern border with Guatemala; stepping up interdiction of busloads of migrants being smuggled through its territory; and agreeing to accept asylum seekers instead of allowing them to proceed to the United States border.
Faced with this threat, major automakers are also planning to delay some vehicle shipments from Mexico, people briefed on the plans told Reuters on Tuesday.
The public split and looming standoff over 5% tariffs on all goods imported from Mexico revealed a fundamental divergence in values between the president and his party. "I think if they do, it's foolish", he said during a joint press conference with United Kingdom Prime Minister Theresa May in London on June 4. "There's nothing more important than borders". "I've had tremendous Republican support".More news: 'Jeopardy!' legend Ken Jennings reacts to James Holzhauer's shocking defeat
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Marcelo Ebrard: "Slapping tariffs, along with the decision to cancel the aid programs to the northern Central American countries, could have a counterproductive effect and would not reduce the migration flows".
It's not clear what the latest tariff threats will mean for passage of the president's own trade proposal to replace the North American Free Trade Agreement.
At the meeting, Mexican officials warned that tariff imposition could hamper the export economy of Mexico, and it could lead to a recession in their economy which could prompt the people to migrate to the USA which is completely opposite to what Trump administration wants.
"As a sign of good faith, Mexico should immediately stop the flow of people and drugs through their country and to our Southern Border".
"We just did not see this coming", says Ann Wilson, senior vice president of government affairs for the Motor & Equipment Manufacturers Association. "A 25-percent tariff could raise 90 billion dollars in customs duties and increase domestic prices by at least 0.4 percent", according to Capital Economics.
Ebrard predicted Wednesday's meeting will be long, and he intends to highlight that Mexico is already making a big effort to curb migrants, despite what Trump has claimed.
Prices increased everywhere after the USA raised tariffs on imports from China.
Before Trump spoke, Lopez Obrador told the two-hour news conference he expected Mexico to reach a deal with the USA over immigration ahead of the June 10 deadline.
Even as Ebrard spoke of hopes for reaching "common ground", Trump bluntly told reporters in London it was "more likely" than not that the tariffs go into effect next week. "Tariffs are not real popular in the Republican Conference".
Both China and Mexico are now exploring possible deals with the United States to remove the tariffs.
Mexican officials have indicated that they are willing to take new steps to restrain the movement of migrants to the USA border, although they haven't described them publicly.
"Mexico should step up and stop this invasion into our country", Trump said, contending that "millions and millions" of undocumented migrants from Guatemala, Honduras and El Salvador are entering the U.S.to escape poverty and violence in their homelands. The officials specifically ruled out a "third safe country" agreement requiring USA asylum-seekers to first apply for refuge in Mexico.
Chinese officials also recently stated that they are unwilling to be forced into a deal by the US' actions and that they are prepared to fight if necessary.