Donald Trump is considering jetting to Mexico City on Wednesday for a meeting with Mexican President Enrique Peña Nieto, just hours before he delivers a high-stakes speech in Arizona to clarify his views on immigration policy, according to people in the United States and Mexico familiar with the discussions.

The possibility, which was hatched in recent days by Trump and his campaign advisers, comes after Trump has wavered for weeks over whether he would continue to hold his hard-line positions on the central and incendiary issue of his campaign, in particular his call to deport an estimated 11 million immigrants who are living in the United States illegally.

The people informed of Trump’s plans requested anonymity due to the sensitivity surrounding its planning. They said late Tuesday that talks between the Trump campaign and Mexican officials were ongoing, with Trump interested in going but logistics and security concerns still being sorted out.

Peña Nieto has extended an invitation for the businessman to come visit with him in Mexico to talk about various political and economic issues, the people said. Trump, sensing an opportunity, decided over the weekend to accept the invitation and push for a visit this week.