Despite an FCC-imposed $700,000 fine just yesterday, AT&T has just detailed plans to invest $14 billion over the next three years to build out its wireless 4G LTE and wireline broadband networks and bring them to more of the population. The carrier promises 250 million US residents will have access to its high-speed mobile broadband offering by the end of 2013, growing to 300 million by the end of 2014. The investment plan is being called Project Velocity IP (VIP), and also includes wireline investment.