Bomb disposal teams were sent to intercept the suspicious suitcase in vain.
"I'm hoping that maybe this is a turning point," former CIA Director John Brennan said.
Trump supporters chanted "lock her up" hours after it was reported that former presidential candidate Hillary Clinton had been sent a "potential explosive device."
Things didn't turn out as planned for the pranksters at Newark International Airport, New Jersey.
The game against Bournemouth was called off following the discovery of a suspicious device.
A terminal building was evacuated and flights diverted at the UK's sixth busiest airport