turning up the heat

Verb

turn up the heat (third-person singular simple present turns up the heat, present participle turning up the heat, simple past and past participle turned up the heat)

1. Used other than figuratively or idiomatically: see turn up, heat.
2. (idiomatic) To increase the intensity of activity or discomfort.
   • The discovery of a third batch of unsecured documents in a third location is turning up the heat on the White House.