How are they supposed to offload their invasion ships when the ports are all backlogged 60 days with other boats filled with Chinese consumer crap?

They'll starve to death before they reach the shore.

After landing in Washington, Oregon California, New York and most of New England, they will be allowed to expend all of their ammo and kill off the enemies of the people. Once the're gone, now they have to face the people with all of the guns and ammo, and that won't go so well for them.