Researchers hope smell testing becomes as standard as the annual flu shot.
Vaccine passports hold out the promise of resuming normal life, but they face major ethical and operational obstacles.
The issue stalled the Senate for hours on Friday.
Law enforcement officials have warned there could be new plots against lawmakers.
Texas electricity companies are billions of dollars short on the post-storm payments.
The position frees the influential group to continue supporting high-profile legislators.
"CDC advises that ORR facilities may temporarily increase capacity to full licensed capacity," a memo, obtained by Axios, states.
Bernie Sanders was pushing to overrule the Senate parliamentarian.
Multiple states lifted mask mandates this week.
"I feel compelled to express great concern with the manner in which your administration is approaching this crisis," McCarthy writes.
High rates of vaccine hesitancy among any group threatens collective progress against the pandemic.