The plain fact is G.W. Bush appearing at the Convention would be an albatross around the neck of Mitt Romney.
Bush nearly destroyed the GOP. He pushed Amnesty for 8 years and refused to secure the Southern Border. He pussyfooted with Presidente Fox and planned the NAU--The North American Union, the end of the sovereign United States--with Fox and Canadian PM Martin via the SPP and our Commerce Department. He forced a Republican House to spend like drunken sailors. 9/11 happened 7 months into his administration. The country was in a perpetual recession under his reign. He called American Patriots--including retired women and men in campers who parked on the Arizona-Mexico Border and called in Border jumpers to the BP--"vigilantes" while himself refusing to protect the nation from Invasion to the tune of 3 million a year-plus.
I'm sure it was a formality, but the Romney Campaign must have breathed a sigh of relief with G.W. Bush declined the invitation to attend the Convention.
My thanks to drudgereport.com for posting this story.