President Donald Trump, who has repeatedly characterized the approaching caravans — without evidence — as an "invasion," has warned the migrants that the military will be waiting for them when they arrive.
He has said that the total number of troops deployed to the southern border could ultimately be as high as 15,000. The president has also indicated that US troops may open fire on migrants who become aggressive.
Read More: Trump says 'I hope not' when asked if US troops will shoot at migrant caravan headed to border