In 2018, the U.S. House of Representatives passed the ADA Education and Reform Act of 2017, H.R. 620, which would have required a plaintiff to to provide the business notice of the alleged violations and an opportunity to correct them before filing a federal ADA lawsuit. However, H.R. 620 gained no traction in the U.S. Senate.
Ohio passed a similar state law, House Bill 271. This new bill requires a plaintiff to provide notice of an alleged violation before filling a civil suit in order to collect attorney's fees. The thought process is this will reduce the number of drive by lawsuits. Since this is a state law it will not impact a plaintiff or case filed federally.