Trump’s decision not to bring up paying for the wall during what he described as a lengthy and candid discussion is surprising, and it leaves one of the most important questions about his visit to Mexico unanswered. The trip, hastily arranged and announced only Tuesday night, comes on the eve of what’s being billed as a major speech on immigration. But in his second journey abroad as a presidential candidate, and his first meeting with foreign leaders, Trump avoided the most controversial issue. He did assert the U.S. right to construct a wall—a far cry from the promise that Mexico would fund the construction.

Trump arrived in Mexico City earlier Wednesday afternoon, and met with the Mexican president, who is often referred to as EPN, at Los Pinos, the Mexican executive mansion. As they met, conflicting reports suggested they might or might not hold a press conference, but eventually the two men emerged and stepped to a pair of lecterns. A Mexican flag stood behind Peña Nieto; there was no flag behind Trump.

EPN went first, speaking in Spanish. For a leader who had previously likened Trump to Hitler and Mussolini, Peña Nieto was restrained. But his statement was a firm, methodical rebuttal to Trump’s campaign rhetoric, even as he offered a few openings for collaboration with the U.S. He emphasized that he would be ready to work with either a President Trump or a President Hillary Clinton.

“Our countries are very important to each other,” he said. “Mexico is very important for the United States, just as the United States is very important for Mexico.” He said the two nations innovate together and noted close collaboration on security.

Peña Nieto then embarked on a live fact-check on Trump’s platform. First up: NAFTA, the 1994 treaty that Trump has pledged to either renegotiate or tear up.

“I expressed my conviction that NAFTA has done a lot of good for the United States and Mexico,” EPN said, noting major U.S. experts to Mexico and studies that find up to 6 million American jobs rely on trade with Mexico. Rejecting Trump’s manichean approach to trade, he said, “I don’t think that commerce can be considered a zero-sum game. It must be seen as an effort that generates value to both parties and makes North America the most competitive and innovative region in the world.”

But Peña Nieto acknowledged that NAFTA was now more than two decades old, and he said he would be willing to discuss updating the treaty, as long as any changes were mutually beneficial.

Next up: Immigration. While acknowledging American anger about illegal immigration, EPN noted that it peaked 10 years ago and is now net negative. He also complained about the flow of cash and guns into Mexico from the United States, and noted that many of the people crossing the U.S.-Mexico border without documents are not Mexicans.