Washington, June 6 (RHC)-- A possible standoff is brewing between Republican leaders and President Donald Trump as Republican senators have come out against Trump’s tariff threat to Mexico, over what he claims is Mexico’s failure to stem the flow of Central American migrants into the United States.

Earlier this week, Trump doubled down, saying the 5% tariff on all Mexican goods -- which would increase every month until it hits 25% -- would “likely” take effect on Monday.  Negotiations are taking place in Washington, D.C., between Mexican and U.S. officials, including Secretary of State Mike Pompeo and Vice President Mike Pence.

Mexico has pushed for talks to settle the issue and has not yet indicated if or how they might retaliate with their own tariffs.  Republican lawmakers are reportedly considering blocking Trump from going ahead with the move, including stopping a potential new national emergency declaration from the president.  Trump said in response that it would be “foolish” for Republicans to block the tariffs.