Republican David McCormick narrowly defeats Democratic Senator Bob Casey in Pennsylvania's contentious Senate race, giving the GOP a majority in the U.S. Senate.
Toxic chemical discovered in U.S. drinking water, raising health concerns and prompting calls for further investigation.
Republican David McCormick narrowly defeats Democratic Senator Bob Casey in Pennsylvania's contentious Senate race, giving the GOP a majority in the U.S. Senate.
Toxic chemical discovered in U.S. drinking water, raising health concerns and prompting calls for further investigation.