News roundup: Mary Lou Retton’s daughter to join LSU’s gymnastics team … Judge tosses La. levee board’s coastal damage suit against oil companies … Feds extend Obamacare enrollment period for some

On the roster: McKenna Kelley, the daughter of 1984 gold medal winning gymnast Mary Lou Retton, is enrolling at LSU as a freshman on the gymnastics team, Gannett Louisiana reports. Retton and her husb…