Donald Trump has vowed to build a 'big, beautiful, powerful wall' spanning the 1,933 mile land border between Mexico and America, which will make crossing over an even greater challenge for illegal immigrants.

But these photographs suggest that there are bound to be some who will try.

They reveal the extraordinary lengths desperate immigrants have gone to in their bids to evade Customs and Border Protection guards undetected and start a new life in the US.

They range from the heart-breaking discovery last month of children being smuggled in hot car trunks to December's interception of a fake, but convincing, border patrol vehicle packed with immigrants.

Other attempts include a Jeep Cherokee balanced precariously atop the border fence and the infamous sight of a man sewn into a car seat.

Another astonishing smuggling bid involved a woman hiding in a car dashboard. Wall or no wall, border guards will need to keep their eyes peeled.

The infamous 2006 picture of a man discovered sewn into the upholstery of a van seat to get across Mexican/US border

Driven to desperation: Two people hidden in the engine compartment of a van. They were caught in May 2010

Illegal immigrants crammed in the back of a tractor trailer in June 2010. Donald Trump has vowed to build a 'big, beautiful, powerful wall' spanning the 1,933 mile land border between Mexico and America

Hide and found: An illegal immigrant hidden behind the back seat of a car in July 2009

Squashed: In May 2010 a woman was discovered by US border guards hidden in the dashboard of a car

Rumbled: Illegal immigrants found in compartments in the floor of a car in May 2010

Agents arrested a male subject attempting to smuggle illegal immigrants from Mexico to the US using this cloned Border Patrol Chevy Tahoe on December 10, 2015. The fake vehicle had a different bumper than the SUVs used by border agents and also did not have lights on top

Twelve people were found crammed into the back of the fake patrol vehicle