A number of Second Amendment advocacy groups are vying to replace the National Rifle Association as the most powerful gun rights group in America. The NRA has been mired in controversy after allegations surfaced of lavish spending by executives and a failed plot to overthrow longtime leader Wayne LaPierre. Politico reporter Marianne Levine joined CBSN to discuss the latest. Source

A record number of fires have devastated the Amazon rainforest in Brazil and neighboring countries Source

Leonardo DiCaprio, Diddy and Madonna are among the celebrities calling for action Source

Osaka is heading to the 139th U.S. Open next week to defend her title Source

David Koch had stepped down from the Koch brothers’ network of business and political activities after deteriorating health last year Source

The 139th U.S. Open starts in New York City next week and Naomi Osaka, one of the biggest names in tennis, will be there to defend her title. At 21 years old, she is the second highest-paid female athlete in the world, according to Forbes. Osaka won last year’s open, defeating tennis legend Serena Williams on her way to back-to-back Grand Slam victories. Vladimir Duthiers reports. Source

President Trump has sent a series of mixed messages this week. First, on gun control. He reportedly told the NRA’s chief executive that he would not support universal background checks for gun buyers. The next day he told reporters, “I have an appetite for background checks — we are going to be doing background checks.” On the the economy, he said Tuesday that a payroll tax cut is “something that we think about.” The very next day he reversed course, saying “I’m not looking at a tax cut now — we don’t need it.” CBS News chief Washington correspondent Major Garrett joins “CBS This Morning” to discuss. Source

The growing popularity of so-called “kid influencers” is raising questions about the potential impact of sharing children’s lives online. These social media stars promote products on Instagram and make millions posting short vlogs. A recent study found about one in three kids between the ages of 8 and 12 aspire to be either a vlogger or a YouTuber. The latest CBSN Original, “Kid Influencers: Few Rules, Big Money,” looks inside the estimated $4.6 billion influencer business. Dr. Sue Varma joins “CBS This Morning” to discuss the psyhological impact this could have on the children involved. Source

This month marks 400 years since the first documented, enslaved Africans arrived in English North America. The weekend events kick off at the Tucker family cemetery. It’s believed to be the burial place of some of the descendants of the first enslaved Africans to come here. Jericka Duncan reports. Source

Preview: In an interview to be broadcast August 25 on “CBS Sunday Morning,” singer-songwriter Taylor Swift talks with correspondent Tracy Smith about how a different vocabulary is used for the accomplishments of men and women in the music industry. Source