Dumb questions (tangentially related)
Do the Feds have the authority to ground the Portland PD helicopters?
In order for law enforcement to have exclusive use of air assets?
This kind of nonsense needs to be responded to in an extremely harsh manner as in Apache gunships up in the air to nape every neighborhood where there are riots.
Burn one neighborhood to show that we mean business and tell them thusly: you have two choices: call off your dogs or we will burn the whole city.
(Just for fun the antifa-loving mayor should be dragged in the command center set up in ICE headquarters with live feeds from the gunships to watch; let him know in no uncertain terms that whatever happens is on him/them.)
They can and could.