President Bush -- It is customary to address ex-presidents as "president". You surely would not want to address him as just George Bush unless he is a personal friend. Governor Bush or even Mr. Bush would probably do.
George H. W. Bush used this phrase in a speech.
Coach baseball teams.
Why would you want to e-mail him in the first place
I'm pretty sure it was George Bush Sr. You can look him up if you want.
he wanted to make the united states a better place
H.W. was not, mainly because he is to old and does not want to fly to Boston for a half a day. Walker was there, if that is was what you are asking.
During his presidency, President George W. Bush, made it clear that he did not believe in marriage equality for gay people. But as of 2013, he has not been asked that question again, so his current opinion is unknown.
George W. Bush was the United States President when Barack Obama was elected president in 2008. Bush was elected into office in 2000 against Al Gore and won a reelection in the 2004 presidential race against John Kerry.
He was elected. I'm not sure if that is what you want to know.