Former U.S. President George H.W. Bush has been hospitalized in Houston since the weekend after he experienced a shortness of breath, a family spokesman said on Wednesday.Bush, 92, the oldest living former American president, has been at the Houston Methodist Hospital since Saturday and “has responded very well to treatments,” spokesman Jim McGrath said in an email to Reuters.“Doctors and everyone are very pleased, and we hope to have him out soon,” McGrath wrote.Bush is the father of former President George W.