Former Kansas Sen. Bob Dole will, according to several reports, go to the Senate floor today to watch members vote on the UN Convention on Disabilities, a treaty modeled on the Americans with Disabilities Act which Dole helped push through the Senate around 20 years ago.

(UPDATE: CSPAN cameras show Dole on floor with wife Elizabeth, herself a former senator. UPDATE #2: He left the floor as the vote began.)

Members of the Senate are paying tribute to Dole on the floor, trying to convince 66 Senators to support the measure.

"We owe it to Bob Dole...to stand up for the rights of the disabled," Illinois Sen. Dick Durbin, a Democrat, said on the floor. He also said the disabled community deserves to see the measure pass.

Several Republicans oppose the treaty because they believe it impinges on U.S. sovereignty. They also fear it could change the rights of Americans to address the problems of the disabled, particularly those who home school their disabled children.