Mexico has significantly increased the number of National Guard forces at its southern border with Guatemala. The question: has it succeeded in slowing the flow of migrants trying to reach the U.S.?

In what may be the start of a major security overhaul, Mexico's president has launched a 70,000-strong National Guard force. But their role remains unclear, as does their training and make up.

An immigration policy known as "metering" is under scrutiny after the publication of a shocking photograph showing two migrants who drowned, Óscar Alberto Martínez Ramírez and his daughter Valeria.

As Mexico cracks down on migrants trying to get to the United States, migrants are trying to evade authorities by taking riskier routes, often putting them in the way of thieves and drug gangs.

Mexico pledged to ramp up immigration enforcement and let asylum-seekers wait on its side of the border. But on its own southern border, migrant detention centers are already overcrowded.

Mexico says it began deployment of National Guard troops to its southern border Wednesday. Its foreign minister says the U.S. and Mexico agreed to review the success of the enforcement in 45 days.

Mexico promised to tighten security along its southern border to prevent migrant crossings — specifically sending national guard troops — prompting President Trump to call off proposed tariffs.

As part of tariff negotiations with the U.S., Mexico plans to stop the flow of migrants from Central America. Mexico is still finding the resources needed to harden its border with Guatemala.

Under a new agreement, Guatemalans seeking asylum must first seek refuge in Mexico, and not the U.S.

A group of Central American parents separated from their children when they were deported from the U.S. say they have a legal right to be reunited with their kids.

Thousands of migrants are camped in Tijuana, Mexico, after U.S. authorities fired tear gas on those who tried to rush the San Ysidro border crossing. Hopes of applying for asylum in the U.S. dim.

The move follows protests on Sunday, when U.S. agents in San Diego sprayed tear gas at migrants said to be throwing rocks. Thousands of Central Americans are waiting to cross into the U.S.

U.S. Customs and Border Protection closed the port of entry at San Ysidro on Sunday. The move came just hours after President Trump tweeted, "No crossings!"

Angel and Delma Muñoz fled gang violence in Honduras and joined the migrant caravan headed toward the U.S. They're now among thousands waiting in Tijuana to apply for asylum.

Thousands of Central American migrants who have traveled weeks to get to the U.S. border are in Tijuana facing an uncertain future. Mexicans there resent them and the asylum process could take months.

While some residents of the northern Mexican city have said "all migrants are welcome," a group of protesters this weekend demanded they be kicked out.

Some 2,500 migrants belonging to the Central American caravan are in a government shelter in Tijuana. Another 2,000 members are on their way to the city while smaller groups are headed north.

Central Americans moving across Mexico are arriving at the Tijuana border crossing into the U.S. Their arrival increases pressures on local authorities and tensions with residents.

More than 5,000 migrants have made it to Mexico City, where authorities are providing food, health care and tents. The migrants now must decide whether to press on or accept a deal and stay in Mexico.

At a rest stop in Mexico City, adults are treated for respiratory and stomach bugs. Their feet are in bad shape. There's anxiety and fear among adults and children. But ... definitely no smallpox.