U.S. Sen. Rand Paul, R-W.V., isn’t the only lawmaker concerned about Attorney General Eric Holder’s admission that drone strikes could occur within the United States.

His colleague, Sen. Ted Cruz, R-Texas, pressed Holder on the subject during a Senate Judiciary Committee hearing on Wednesday, laying out hypothetical situations and asking whether they could ignite a potential drone attack.

Cruz, for instance, asked whether a U.S. citizen accused of terrorist activity could be targeted while drinking coffee at a café. Although Holder said he didn't think it would be constitutional to use lethal force in such a case, the freshman senator wouldn't let his point rest.

"With all respect, General Holder, my question wasn't appropriateness or prosecutorial discretion, it is a simple legal question," Cruz continued. "Does the constitution allow a U.S citizen on U.S. soil who doesn't pose an imminent threat to be killed by the U.S. government?"

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While Holder reiterated that the scenario was purely hypothetical, Cruz maintained he was looking for a one-word answer – “No.”

Watch the exchange in the video, above.