ANALYSIS: Robert Mueller’s Testimony Is Bad News for Joe Biden, Bernie Sanders, and Hillary Clinton

Twitter users point out Mueller suffering from lack of physical stamina

Former Special Counsel Robert Mueller testified in Congress on Wednesday, and users of the popular social networking website Twitter have been doing their best to express insightful opinions about his testimony.

There appears to be a consensus forming, for example, that Mueller's performance in front of the House Judiciary Committee was underwhelming to a degree that raises some troubling questions.

Many pundits are suggesting that Mueller, who will turn 75 in August, appears to be suffering from a lack of physical stamina and intellectual agility due to his advanced age. That's bad news for 2020 Democratic frontrunner Joe Biden, 76, as well as socialist challenger Bernie Sanders, 77. Failed presidential candidate Hillary Clinton, who has not definitively ruled out another White House run in 2020, is also very old.

If Robert Mueller can barely bumble his way through a congressional testimony at 74, many voters might be left wondering whether Biden and Sanders are fit to serve as president, much less to mount a successful campaign against President Donald J. Trump, who turned 73 in June. A man of legendary stamina whose formidable intellect has laid waste to countless inferior opponents in the past, Trump has been described as "the healthiest individual ever elected to the presidency."