Is it important to go to the countries that immigrants are fleeing?

Should Harris go to the countries where immigrants are coming from or should she do a Photo Op like Ted Cruz did? Cruz "We have been listening to and seeing "Cartel Members", Human Traffickers right on the other side of the river."
Find a bush on the river and do a video.
Obama, Biden had a 20 to 40 year low in illegal crossings depending what News source you read because they tried to solve problems in origin countries. Trump took a record breaking low number of crossings and turned it into record breaking high number.