NEW YORK (CBSNewYork) -- Donald Trump is set to meet with the president of Mexico on Wednesday.

Late Tuesday night, Trump tweeted, "I have accepted the invitation of President Enrique Peña Nieto of Mexico and look very much forward to meeting him tomorrow."

The Clinton campaign slammed Trump, pointing out what he has said about Mexico in the past.

"From the first days of his campaign, Donald Trump has painted Mexicans as 'rapists' and criminals and has promised to deport 16 million people, including children and U.S. citizens. He has said we should force Mexico to pay for his giant border wall. He has said we should ban remittances to families in Mexico if Mexico doesn't pay up," Clinton campaign communications director Jennifer Palmieri said in a statement. "What ultimately matters is what Donald Trump says to voters in Arizona, not Mexico, and whether he remains committed to the splitting up of families and deportation of millions."

Also on Wednesday, Trump will unveil his new immigration policy. It has been unclear whether he still wants to deport 11 million people.

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Trump said he is ready with his immigration speech and will deliver it Wednesday in Arizona. He's recently softened language about deporting the estimate 11 million undocumented immigrants in the U.S.

"I think that he has been very clear on this. We're not going to have amnesty. What we're going to do is to get those who are breaking the law out of the country as quickly as possible," New Jersey Gov. Chris Christie said on Monday.