Harrisburg, Pa., currently more than $340 million debt, is on the verge of getting a powerful negotiating tool with creditors: the threat of bankruptcy, Reuters reported yesterday. A state ban that prevented Harrisburg from filing for municipal bankruptcy protection is set to expire after Nov. 30. A year has passed since Harrisburg first tried filing for bankruptcy in October 2011. The city is now deeper in debt and there is no guarantee that it will not seek court protection once again.