The DOT has accepted JetBlue's complaint as well as the complaint which Airlines for America filed. KLM and any other Dutch carrier has to file their proposed schedules to/from the US. Depending on the outcome of diplomatic discussions, the DOT can take further steps including dimantling the JV between DL/KL on routes between the US and the Netherlands, ban KLM codeshares with DL within the US, take away their slots at JFK, etc. It seems highly likely that this will get resolved.