The thing is beyond most people's delusions about "their tax dollars" migrant trafficking has no real negative impact on day to day lives. You can make some fairly complicated economic arguments, but mostly you aren't competing for jobs with migrants. The US benefits extensively from cheap labor, legal and illegal and cheap products.
People pay 5-15k to cross, there's a whole economic infastructure that exposes all the hypocrisy. it's not this exactly simple, but:
Mexican organized crime controls those plazas, or operates in them with other rival groups, (they both pay bribes) they charge fees to the migrant smugglers, who extract fees from the migrants, parts of that money pay off authorities in that plaza, and part of the larger river of money is paid to nationwide politicians, all the way from Attorney Generals, to military generals, to presidents, governors, mayors, law enforcement, marines, on an on.
Then the US deals with those politicans who are already on the payroll, and the US offers economic/political incentives to cooperate with the US on things like combating drug trafficking/migrant trafficking, extraditing cartel bosses. So maybe that explains why a bunch of truckers aren't going to make an impact. it is in in NO ONES interest to close the border anymore than it already is.
the idea that these guys in Virginia are being hurt by migrants is delusional.