Say that the president of the United States nominates a person to a position and Congress chooses not to confirm them. Is it possible (though I imagine politically unwise) for the president to re-nominate them in order to force the issue?
President: I nominate John Doe.
Congress: We reject your nomination.
President: Well, as my next choice, I nominate John Doe.
Congress: Uhh, well we reject your nomination again.
President: Then I nominate John Doe again. Look, I’ll keep doing this until you approve my choice. Do you want the position filled or not?
Congress: …Fine, we approve your nomination.
Could this theoretically happen? Or is there some rule that a person rejected cannot be re-nominated?