Stupid Rodents.
They don't actually object to the border rush. What they're finding difficult is getting their propaganda organs to drop the stories and focus on the important stuff, like Dr. Seuss and how the Queens of England are racists.
Trump already had the issues at the border under control. All that is needed to regain control is for the Rodents to confess they stole the election and Trump is the real president, something all the normal people already know.