News roundup: Cost of failed Louisiana special session lower than initial estimates … First Bancshares completes acquisition of Florida bank … Dow dives 750 points after China puts tariffs on US goods

Less wasted: New figures show the failed 15-day special session of the Louisiana Legislature cost $642,968, much less than initial estimates of $50,000 to $60,000 per day, reports NOLA.com, which obta…