Dawson is the "Defense Minister" of the United States. He enjoys talking on his gigantic cellphone.
Dreamwave comics continuity
Dawson greeted the President of the United States at the Pentagon, and advised him to order an air strike on San Francisco, where a massive battle between the newly-awakened Autobots and Decepticons was raging. Dawson was interrupted by a call from Central Intelligence, who informed him that a nuclear missile launch had been authorized - unbeknownst to Dawson, by General Robert Hallo. This greatly surprised both Dawson and the President, who unsuccessfully attempted to abort the launch.
The Secretary of Defense was denied access to the President's office by his new secretary- he didn't call ahead for an appointment, and Susan doesn't like that.