Mexico will announce a plan this week to grant temporary visas to Central Americans so they can work on public infrastructure projects, according to President Andres Manuel Lopez Obrador.

According to Lopez Obrador, such projects demand more personnel, including welders, ironworkers, and engineers.

“We need a workforce for these projects, especially if it’s skilled labor,” Lopez Obrador said. “We will guarantee them one year.”

He did not provide details on how many visas would be issued, or for which projects.

Lopez Obrador has long pushed for investment in Central America to stem the migration of thousands of people every year fleeing poverty and violence in Guatemala, Honduras and El Salvador.

He has also sought to boost development in the impoverished southern region of Mexico, which sits near the border with Guatemala.

Lopez Obrador’s flagship projects underway include a freight rail line meant to create a trade route between Mexico’s Pacific and Gulf coasts, and a tourist train linking destinations around the Yucatan Peninsula.