The 1889 Johnstown flood was one of our nation's worst natural catastrophes and killed about 2,200 Pennsylvanians.  Maybe Casey should ask Santorum if descendants of the Johnstown flood victims should be retroactively fined, as well?  

I think it's only fair that Pennsylvanians get his opinion on the issue.

http://www.johnstownpa.com/History/hist19.html