Mexican President Andrés Manuel López Obrador said Friday that he will respond “prudently” to the Trump administration’s threat to impose a five percent tariff on the Central American country.

In a letter posted on his Twitter account, López Obrador said he would seek a diplomatic solution. “Right away, I must express that I don’t want confrontation,” the Mexican president said in a letter directed at Trump.

“You also know that we are fulfilling our responsibility,” López Obrador said, of stemming the flow of migrants “in the best way possible and without violating human rights.”

“I propose to deepen our dialogue and to find core solutions to the migration problem,” said López Obrador.

Trump said on Twitter Thursday that the plan will take effect on June 10th and will “gradually increase until the illegal immigration problem is remedied at which time the Tariffs will be removed.”

This week, U.S. Customs and Border Patrol officers in El Paso, TX apprehended a group of over 1,000 illegal immigrants making it the largest group ever. According to several reports, law enforcement officials are overwhelmed and stretched for resources because of the consistent flows of people and large caravans.

It appears that Trump has also become increasingly frustrated with the status quo. Trump shared his sentiments on twitter Friday, “Hard to believe that with the Crisis on the Border, the Dems won’t do the quick and easy fix. Would solve the problem but they want Open Borders, which equals crime!

Following the announcement, Obrador sent Foreign Affairs Secretary Marcelo Ebrard to Washington but made no commitments to cooperate with new tariffs.