The US Government issued ID, of which AOPA speak is........your driving licence.
Feb. 21 — AOPA today petitioned FAA to change the rules to allow for a simple, inexpensive pilot photo ID that could be put into place almost immediately. AOPA said that FAA should simply require that pilots carry a valid, government-issued photo ID along with their pilot certificates when in command of an aircraft. That photo ID could be a driver's license, passport, state ID card, or government agency photo ID card.
Not much needed in the way of background checks and fingerprinting for that.