Those "immigrants" haven't "marched" any where, especially from Central America. Look at the shoes-sandals and new looking sneakers on kids; everyone looks well fed and the clothes don't seem to have a smidge of dirt, let alone signs of being worn for days and miles of travel. Plus where is their luggage/bundles of extra clothes, food, water and mementos from home.
Need to be met by closed barricades. Close all traffic and imports from Mexico until they take care of the people they have welcomed into their country.