This story is a few years old, but now that we've cleared the air over Hillary, maybe it finally deserves more attention.  
Jason Chaffetz is on tape saying he "absolutely" voted with the GOP to cut $300 million for embassy security.  
The article also quotes Washington Post reporting showing that the GOP embassy security cuts were part of a multi year effort, lead by Paul Ryan's budget, to cut the following.  
For fiscal 2013, the GOP-controlled House proposed spending $1.934 billion for the State Department’s Worldwide Security Protection program — well below the $2.15 billion requested by the Obama administration. House Republicans cut the administration’s request for embassy security funding by $128 million in fiscal 2011 and $331 million in fiscal 2012....
[In 2011] Secretary of State Hillary Clinton warned that Republicans’ proposed cuts to her department would be “detrimental to America’s national security” — a charge Republicans rejected.
[GOP vice presidential nominee Paul] Ryan, [Rep. Darrell] Issa and other House Republicans voted for an amendment in 2009 to cut $1.2 billion from State operations, including funds for 300 more diplomatic security positions. Under Ryan’s budget, non-defense discretionary spending, which includes State Department funding, would be slashed nearly 20 percent in 2014, which would translate to more than $400 million in additional cuts to embassy security.
One year before Benghazi, Hillary warned the GOP that their embassy security cuts put Americans at risk, and they didn't listen to her.