WORLD NEWS ROUNDUP LATE EDITION, 07/27

<p>CDC changes its guidance on mask-wearing for vaccinated Americans. Capitol Police officers give emotional testimony about the January 6th riot. Simone Biles withdraws from today's Olympic competition, citing mental health reasons. Guilty plea for the man accused in the Georgia spa killings.</p><p>See Privacy Policy at <a href="https://art19.com/privacy" rel="noopener noreferrer" target="_blank">https://art19.com/privacy</a> and California Privacy Notice at <a href="https://art19.com/privacy#do-not-sell-my-info" rel="noopener noreferrer" target="_blank">https://art19.com/privacy#do-not-sell-my-info</a>.</p>