Migrants line up at the US border wall after being detained by US immigration authorities, seen from Ciudad Juarez, Mexico, Dec 27, 2023. (PHOTO / AP)

MEXICO CITY - Mexico said on Wednesday it had struck unspecified "important" deals with the United States after talks that US officials sought to focus on curbing record-high migration, a key issue in next year's US elections.

Secretary of State Antony Blinken led the closed-door negotiations for the US side, and Mexican Foreign Minister Alicia Barcena told reporters she had pushed US officials to ease any remaining curbs on cross-border trade.

The administration of US President Joe Biden is seeking the help of President Andres Manuel Lopez Obrador to reduce a record high number of migrants wanting to enter the world's wealthiest economy from Mexico, a key issue with voters ahead of Biden's expected re-election bid next year.

In a post on social media, Lopez Obrador hailed what he described as "important agreements" following the talks with US officials, but without giving any details on the deals.

Earlier this month, the US border authorities temporarily closed two key rail border crossings for five days and shuttered other crossings in order to redeploy enforcement resources elsewhere in response to spiking migration

Lopez Obrador said he had requested the meeting to discuss cooperation on migration, the economy and security.

The meetings come after more than half a million migrants this year crossed the dangerous Darien Gap jungle connecting South America with Central America – double last year's record – with many fleeing crime, poverty and conflict to seek better prospects in the United States.

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Earlier this month, the US border authorities temporarily closed two key rail border crossings for five days and shuttered other crossings in order to redeploy enforcement resources elsewhere in response to spiking migration.

In remarks outside Lopez Obrador's downtown offices, Barcena described reopening the crossings as a "priority" for Mexico.

"We are talking about the economic part, as well as the structural causes of migration," she said.

A migrant carries a pet transporter as a dog follows along the US border wall, seen from Ciudad Juarez, Mexico, Dec 27, 2023. (PHOTO / AP)

Last week, Lopez Obrador pledged to help ease migratory pressures on the United States and earlier on Wednesday he urged US lawmakers to invest more to help the poor in Latin America and the Caribbean "instead of putting up barriers, barbed wire fences in the river, or thinking about building walls."

Former US president Donald Trump, the leading candidate to take on Biden in 2024, has promised to crack down on illegal immigration and restrict legal immigration if elected.

ALSO READ: Migrant caravan advances north as US officials head to Mexico

During his previous term, Trump focused on building a wall on the Mexico border. His administration built 725 km of barriers across the roughly 3,200-km border, but much of that replaced existing structures.

Lopez Obrador met with Blinken, while the US delegation also included Homeland Security Secretary Alejandro Mayorkas, who leads border security efforts.

"We had a very productive meeting," Mayorkas said in a post on X, adding that "the regional challenge of migration requires regional solutions."

Earlier, thousands of migrants and asylum seekers marched slowly north hoping to reach the US border. "We don't need to go back to our country if we don't have anything there," said Nohemia Zendejas, a mother on the road with four children.

"I come from Venezuela," she said. "And Venezuela is broken."