Mexico says it has successfully curbed the number of undocumented migrants crossing into the United States by 56% since May.
Foreign Secretary Marcelo Ebrard announced the reduction of numbers at a government news conference on Friday.
The two countries agreed in June to a 90-day window to reduce the flow of migrants crossing into the US.
President Donald Trump had threatened to implement tariffs on Mexican imports if they did not act to stem migration.
Officials, including Mr Ebrard, are set to travel to Washington next week to discuss their efforts.
“I don't expect there to be a tariff threat on Tuesday,” Mr Ebrard said about the meeting.
What was the deal?
Mr Trump announced in June that the US had reached an 90-day agreement with Mexico to reduce migrant flows from Central America heading north.
A joint declaration said Mexico had agreed to take “unprecedented steps” to curb irregular migration and human trafficking.
The deal involved initiatives like closer bilateral co-operation and Mexico deploying thousands of National Guard troops throughout the country.
In exchange, a US threat to implement punitive tariffs was suspended.
Mr Trump had pledged import duties of 5% would come into place, and rise every month, if Mexico failed to act.
