Washington DC, Nov. 12 -- Nearly 2,000 migrants from Central and South America are heading towards the US southern border following the Democrats' gains in the midterm elections, with US President Donald Trump threatening to immediately double tariffs on Mexico if it fails to stop the caravan from reaching American territory.

In a post on Truth Social on Thursday (local time), Trump linked the formation of new migrant caravans to the Republicans' performance in the midterm elections, claiming that the movement was taking place following the party's electoral losses.

He said, "Here we go again! With the perceived loss by the Republicans in the Midterms - I was not on the ballot- the invasion of our Country is taking place again. Huge car...