Tim Kaine has long Covid. That’s not moving Congress to act.

Tim Kaine was once hopeful that his colleagues would take the looming threat of long Covid more seriously if they knew someone living with the mysterious post-viral illness — himself.

Earlier this year, the Virginia senator and former vice presidential candidate started bringing up the nerve sensitivity that he fears may be permanent at every health care-related hearing, in backroom conversations with colleagues, in speeches and during press conferences.

After he was infected in March of 2020 — with strange symptoms he first thought were an allergic reaction — Kaine watched his...