AOC has multiple concerns about NBC News' misinterpretation of her speech.

"What happened in Flint should never have happened."

"We assume that Alexei was poisoned with something mixed into his tea."

Marrero also said letting Trump block the subpoena would amount to an "undue expansion" of presidential immunity.

Trump's lawyers said the U.S. president has longstanding discretion to decide who can be counted when apportioning Congressional seats.