Wrong. Are you sure you know what a signature strike is?
"But the president also said that he was going to explore "other options for increased oversight," and that he'd signed "clear guidelines" for "oversight and accountability" just the day before. "Before any strike is taken," he declared, "there must be near-certainty that no civilians will be killed or injured -- the highest standard we can set."
Though signature strikes were not mentioned, some assumed language like "near certainty" and "highest standard" meant they were no longer going to be used." -- Huff Post
It does not mean that collateral casualties cannot happen. We cannot fight a war against terror if we fear to take action because of this. You would be the first to complain if Obama decided to stop hitting the terrorists hard wherever we can find them.