 But Lewis had preserved his objection to federal jurisdiction by filing a motion to remand the case to state court and then by raising the issue on appeal.Shouldn't the plaintiff be rewarded for his diligent effort to preserve his choice to try the case in state court?Lewis argued that to allow Caterpillar to benefit from the district court's mistake would encourage defendants to seek removal more often in the hopes that the district court will make a mistake they might exploit.