Washington (CNN) -- Republicans call it a government cover-up similar to what forced Richard Nixon to resign. Democrats call it a right-wing conspiracy theory. The fallout from the September 11, 2012, terrorist attack in Benghazi, Libya, that killed four Americans continues more than 19 months later, with further details last week that raised questions about how the Obama administration responded to the violence less than two months before the President's re-election. Few issues reveal the hyper-partisan politics of Washington more than the ongoing debate over an issue now known simply as Benghazi. Last Friday, House Oversight Committee Chairman Darrell Issa announced that he had subpoenaed Secretary of State John Kerry to testify at a May 21 hearing, alleging that the State Department failed to comply with an earlier subpoena for documents.
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House votes to form a select committee; Democrats undecided on taking part
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19 months later, Washington remains riven by the Benghazi terrorist attack
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A recently divulged email reignites fierce partisan debate from the 2012 election
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Republicans see the issue as a vulnerability for Hillary Clinton
The issue gives Republicans perhaps their lone line of attack against Hillary Clinton, the overwhelming favorite for the @placeholder presidential nomination in 2016 if she decides to run.