Senator Daniel Inouye (age 88) hospitalized (below is quote per Politico) -

“For the most part, I am OK...However, I am currently working with my doctors to regulate my oxygen intake. Much to my frustration, while undergoing this process, I have to remain in the hospital for my own safety and to allow the necessary observation.” “I will be back on the Hill as soon as my doctors allow it. Thank you all for the kind words and continued support.”