As campus protests continue nationwide, Columbia University has begun suspending students.USA TODAY National Political Correspondent David Jackson has the latest on a tight race between President Joe Biden and former President Donald Trump.Four law enforcement officers were killed while serving a warrant in North Carolina.The death of Ohio man Frank Tyson, who told police 'I can't breathe,' has echoes of George Floyd.USA TODAY Money, Markets and Personal Finance Reporter Medora Lee explains why you're better off renting than buying a home in major U.S. cities.See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.