Reports of MB influence and stances are widely misrepresented. They are much also stronger in Alexandria than Cairo, which is pretty secular.

Also, where did you hear about Al Quada ties? As far as I have ever seen reputably reported, the organizations hate each other.

True that MB does not like Israel, but they appear more or less similar to the current ruling party in Turkey than to a vehemently anti Western terrorist movement. Which is to say I doubt the USA would agree with them on many things, but even if MB gained power it seems highly unlikely that Egypt would suddenly become a state sponsor or facilitator of international terrorism.

For who could be free when every other man's humour might domineer over him? - John Locke (2nd Treatise, sect 57)