Several states are reimposing mask mandates and businesses are requiring vaccinations for employees as COVID cases rise among the unvaccinated. Omar Villafranca has the latest. Source

President Biden is expected to announce that all federal workers, including contractors, must be vaccinated or undergo regular COVID testing. Some cities and states have already implemented similar rules. Weijia Jiang reports. Source

Lavita Harvey, a single mother in Nevada, said she’s facing eviction as she waits for $9,000 in federal assistance. Source

Hordes of visitors are “loving our parks to death” since COVID-19 restrictions have been lifted. Source

The 29-year-old rapper was criticized by activists, fellow musicians and fans for his comments. Source

Did a love triangle lead to murder? After his fiancée is found dead, a man researches time travel to “correct a horrible mistake.” CBS News correspondent Tracy Smith reports. Watch “48 Hours” Saturday, July 31 at 10/9c on CBS. Source

A House select committee started its investigation into the attack on the U.S. Capitol. At a hearing, four police officers who defended the building on January 6 described their experiences in vivid detail. CBS News’ Skyler Henry reports on their emotional testimony, and CBS News political contributor Molly Hooper joined “CBSN AM” with analysis. Source

The Centers for Disease Control and Prevention is now recommending that some fully vaccinated Americans wear masks indoors. The new guidance affects people living in areas with substantial or high COVID-19 transmission rates. “CBS This Morning” lead national correspondent David Begnaud spoke with a mother who’s concerned about sending her children to a school without a mask mandate, and Dr. Neeta Ogden, an internal medicine specialist and immunologist, joined CBSN to discuss the new CDC guidance. Source

Thousands of teenagers from immigrant families are still hoping to be a part of the Deferred Action for Childhood Arrivals program, though a Texas federal judge blocked the Biden administration earlier this month from approving new applicants. CBS News immigration reporter Camilo Montoya-Galvez spoke with CBSN’s Tanya Rivero about how applicants are affected. Source

The Associated Press projects that Jake Ellzey has won the special runoff election in Texas’ 6th congressional district. CBS News political contributor and Democratic strategist Joel Payne and former Republican National Committee communications director and Republican strategist Doug Heye joined CBSN’s Tanya Rivero to discuss. Source