Get well soon, Harry Reid! According to a statement from his office, Senator Reid went to the hospital because he wasn't feeling well, but is resting comfortably. His test results were normal.
I'm speculating here, but maybe Reid's illness is the product of petulant Republicans who decided to head out for the holiday after refusing to allow the remaining votes to be agreed to by unanimous consent.
Rachel Maddow explained it all on her show last night, but it boils down to this. Democrats are behaving like responsible adults while Mitch McConnell and his gang have chosen the way of petulant children.