How did the Muslim Brotherhood gain power in Egypt?

Obama removed all stops.

The following from Al Jazeera

For years the Muslim Brotherhood was officially banned by Egypt's government, but following the 2011 revolution, the fall of Hosni Mubarak and the country's first free parliamentary elections, the Brotherhood - with its political arm, the Freedom and Justice Party - has emerged as Egypt's most powerful political force.
The Muslim Brotherhood's gradually integrated into the Egyptian political system - despite the attempts of Mubarak to suppress the organisation during his 30-year rule.  ...continued