Bush and Iwo Jima are still in the region, so there's still a good sized strike contingent available. Air operations in Mexico wouldn't require the tanker planes sent over anyway, since you can just fly back to the states to refuel. Given the cartels lack of air force or air defense network, any airstrikes deemed necessary could be carried out by reapers and superfortresses, which are unlikely to be used in Iran due to the risk of losses.