It was a long battle with plenty of setbacks, but the U.S. government has finally agreed to compensate New York emergency crews who got cancer from their exposure to toxins during the response to the collapse of the World Trade Center. Officials are expected to announce the inclusion of cancer patients to the the Zadroga Act, a $9.3 billion compensation act intended for people who were made sick by the World Trade Center toxins. The bill was approved by President Barack Obama in January 2011, but it has taken until now to include cancer patients under its umbrella of coverage …