The correct response for comparing the political system of Mexico with the United States in terms of presidential re-election is:
Mexican presidents cannot be reelected after serving six years, regardless of job performance.
In Mexico, the president serves a single six-year term and cannot be re-elected. In contrast, U.S. presidents can serve a maximum of two four-year terms, making the U.S. system distinct in terms of re-election and term limits. The other statements do not accurately reflect the political systems of Mexico and the United States.