In order to qualify to be the U. S. President, one must be at least years old.
25
30

Explanation:

In order to qualify to be the U.S. President, one must be at least _30_35___ years old.

30

Explanation:

Becoming the President of the US entails quite a few requirements in order to ensure that the person is fit to lead the nation. One of these is the age requirement: candidates must be at least 30 years old to become President, just to make sure that they are mature and knowledgeable enough to fulfill this position.

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would not cooperate with each other voluntarily.

d. the right to establish a one-house legislature