Colombia's leading presidential candidate, Abelardo de la Espriella, has vowed to strengthen ties with the United States following an endorsement from US President Donald Trump, bolstering his campaign for the upcoming runoff election.

Colombia's hard-right presidential frontrunner Abelardo de la Espriella pledged closer ties with the United States on Tuesday after receiving US President Donald Trump's endorsement, strengthening his position ahead of a June 21 run-off election against leftist senator Ivan Cepeda.