At his daily press conference, Lopez Obrador said recent figures show a drop in migrant flows following the immigration "crisis" in December that saw tens of thousands of migrants crossing Mexico to reach the U.S. border.
"We had a crisis on the northern border in December of 12,000 migrants a day, and we made a joint effort and reduced the average (number) to 6,000," he told reporters at the National Palace in Mexico City.
His administration "continues to press" for the development aid needed from the United States to deal with mass immigration at the roots by investing in Central American countries to create jobs and improve living conditions, the president said.
"That's what we are working on, that was our original proposal, addressing the causes," he added.
The Mexican president has repeatedly urged his U.S. counterpart, Joe Biden, to allocate resources to mitigating immigration through development.
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