Four men ignored President Donald Trump's tough immigration talk, with three helping one migrant jump the rusty metal barrier between Ciudad Juarez in Mexico and Sunland Park, New Mexico into the US on Friday.

With the help of three other men, including two to give him a boost and one to stand as a lookout, the young man leaped over the barrier and ran further into American territory.

The whole operation took less than two minutes.

This comes as Trump has ordered thousands of National Guard troops to deploy to secure the US frontier with Mexico, ahead of an anticipated wave of about 1,000 potential border crossers.

Four men ignored Trump's tough immigration talk, with three helping one migrant jump the border wall between Ciudad Juarez in Mexico and Sunland Park, New Mexico on Friday

'He couldn't get over! He was taking forever,' said one of the men who helped him, telling AFP he has seen people scale the 20-foot (six-meter) wall in one minute flat.

He then ran off to avoid being spotted by US Customs and Border Protection.

The young border jumper, who hailed from southern Mexico, meanwhile disappeared into the desert, running toward a group of houses just visible on the horizon.

With the help of three other men, including two to give him a boost and one to stand as a lookout, the young man leaped over the barrier and ran further into American territory

The whole operation took less than two minutes, an AFP reporter said

'He couldn't get over! He was taking forever,' said one of the men who helped the man over

This comes as Trump has ordered thousands of National Guard troops to deploy to the US frontier with Mexico, ahead of an anticipated wave of about 1,000 potential border crossers

Trump has unleashed a flurry of furious tweets, after seeing news reports of a caravan of more than 1,000 Central American migrants crossing into Mexico and continuing toward the United States.

On Thursday he ordered 2,000 to 4,000 National Guard members to report to the border, drawing a bitter reaction from Mexico.

The activists organizing the migrant caravan have announced they will no longer try to reach the border as one group.

The day before this man crossed the border, Trump ordered 2,000 to 4,000 National Guard members to report to the border, drawing a bitter reaction from Mexico

One man helping above an off to avoid being spotted by US Customs and Border Protection

One of the men who helped this man jump the barrier told the AFP he has seen people scale the 20-foot (six-meter) wall in one minute flat

Instead, individual migrants and families have each begun going their own way.

Many remain in central Mexico. But some have already made it to the border, according to Javier Calvillo, a Catholic priest who runs a shelter for migrants in Ciudad Juarez.

'Five migrants who were part of the caravan arrived here this week, but they're already gone,' he said.

'They crossed into the United States, or tried to.'