Don't think current administration would risk that, republican controlled house is looking for any shred of a scandal to have hearings, they are itching to impeach Obama. More than likely you'll see the executive branch would do any business(advertising etc) with yahoo and military would do some knee jerk reaction like ban armed serviced personnel from viewing yahoo properties similarly to what they did with the Guardian. Its easier and safer to cut the money streams. Luckily for Yahoo it isn't much, unlike Microsoft or Att who have more to lose in terms of government contracts.