trace? >> tucker, right now there are primary caravans making their way north, including anywhere from 4,000 to 7,000 people. the first of the major caravans is expected to arrive at the u.s. border sometime late next week, but as you say, some 350 migrants have now arrived at the border in tijuana. dozens of them scaled of the fence and taunted border patrol officers, others stood at the offense or hung out onof the beach, but they want their presence known to both border patrol and media. watch this. >> [speaking spanish] >> that is a slang for "honduran." there are reports they broke from the main caravan about four or five days ago and took buses north. it is impossible to tell how many are from the caravannd because border patrol tells us central american migrants sometimes arrive in droves every single day at the u.s. border. we certainly know that many of these migrants are being coached