George H W Bush, the former US president, is being treated treated for bronchitis in hospital in Houston, Texas, medical officials say.
The Houston Chronicle reported on Thursday that Bush, 88, has a chronic cough and that his condition is not life-threatening.
He has been in the hospital for a week and is expected to be released this weekend, the newspaper reported.
Bush, a Republican and the 41st president, took office in 1989 and lost his re-election bid in 1992 to Democrat Bill
The father of former President George W Bush, he served as a congressman, UN ambassador, envoy to China, CIA director and two-term vice president under Ronald Reagan.
As president, Bush routed Iraq after Saddam Hussein had invaded Kuwait in 1990, with his his approval ratings soaring to the 90 per cent range.
But just 20 months later he was be defeated by Clinton. Bush is the oldest living former president and a World War II veteran.