He 'invoked' the memory/name of his predecessor.
The suspect 'invoked' his right to an attorney.
He 'invoked' his Fifth Amendment privileges.
(..) We're bringing you exclusive images of the terrorist-held White House. Clear left. Cabinet is assembling with the vice president to invoke the th. Cale, if you don't get him out in the next five minutes... - ...he might not be president anymore. - You didn't give me the job, remember? (..)2013 White House Down
(..) Only the president can give that order. The president is behind enemy lines and compromised. I'm calling the Cabinet together to invoke the th. You gotta understand, this is a very difficult situation... ...for the Pentagon, there are hostages. You can't bring the big guns out... (..)2013 White House Down