Senior White House adviser Jared Kushner is planning an initiative to revive and bolster U.S. aid to Central America in exchange for cooperation on illegal immigration, a proverbial carrot to the stick of President Trump’s freezing of aid in response to high levels of migration from the region.

Kushner, the Treasury Department, and the Mexican government are planning an investment conference in Mexico City that would provide incentives for governments to curb U.S.-bound migration and for individuals to stay in their home countries. As part of the deal, Honduras, Guatemala, and El Salvador would pledge to enact business-friendly measures, someone familiar with the matter told Bloomberg. The event is expected to take place in March or April, with Treasury Secretary Steven Mnuchin a potential attendee.