Monday on the NewsHour, Ukraine replaces its defense minister amid a corruption investigation and a slow counteroffensive against Russia. A national bus driver shortage leaves families scrambling to find rides for their kids at the start of a new school year. Plus, with more children becoming social media influencers, one state works to ensure they're getting paid for their work. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders