President Obama has ordered that all U.S. flags fly at half-staff Tuesday in honor of the late House speaker Tom Foley.

The order comes as Obama, former president Bill Clinton and top congressional leaders plan to honor Foley Tuesday afternoon at a memorial service at the U.S. Capitol.

Foley served as House speaker from 1989 to 1995. In 1994 he became the first speaker in more than a century to be defeated in the race for reelection to his congressional seat.

His defeat after 30 years in Congress was perhaps the biggest GOP victory in that year's "Republican Revolution," which returned Republicans to power and installed Newt Gingrich as speaker.

Foley died Oct. 18 at age 84 after months of ill health.