system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do presidents elect Supreme Court justices? Doesn't this defy the whole balance of the three branches of government?
gpt
No, because Presidents only nominate Supreme Court Justices.

The Senate has to confirm them (which balances the power between those branches.)

The Justice then serves for life and has power to review the constitutionality of executive and legislative actions (which balances the power between the Justice and the other two branches.)