Plenty of time to infiltrate and destroy it slowly from within.
Plenty of time to sway a great deal of opinion within this country for when they do reach the southern border. Why is it practically all young adult men? Why is the fact that they’re being bused hidden? Why are they fleeing Honduras which has no war, no severe economic challenges? Why are they using women and children as shields at the front of the line? Why did Mexico let them in, Mexico has a secure southern border.
Just casually drop a few of these questions around anyone you know who might be prone to sympathy. Undermine the purpose of this faux refugee migration, poison public opinion. Undermine faith in the mass media even further than it already has been undermined.