McConnell's health concerns worry Democrats
McConnell has twice appeared to freeze up while speaking in public.
Democrats are watching the situation closely.
Schumer has said that he is "very glad" to see McConnell back, but he has also expressed concern about his health.
McConnell has vowed to remain as Senate Minority Leader through next year, but it is unclear what will happen if his health continues to decline.
Some Republicans have said that they are confident that McConnell will be able to continue to lead the Senate, while others have expressed concern.
The health of Mitch McConnell is a major issue in Washington, and it is likely to continue to be a source of speculation and debate.
The news media has been closely covering McConnell's health, and the story has been a major topic of discussion on social media.
The future of Mitch McConnell is uncertain, but his health is a major factor that will shape the future of the Senate.