Final answer:
The rhetorical strategy used in the sentence is hyperbole.
Step-by-step explanation:
The rhetorical strategy used in the sentence is hyperbole. Hyperbole is a figure of speech that involves an exaggeration or overstatement to emphasize a point. In the sentence, the phrase 'Obama and his Democrat-Communist party bloated the already bloated federal bureaucracy by 25 percent in ONE YEAR' exaggerates the increase in the size of the federal bureaucracy.