BuzzFeed writes, Using sequestration as “an excuse,” Republican Rep. Diane Black charges. Image by Chip Somodevilla / Getty Images WASHINGTON — Rep. Diane Black Wednesday attacked the Obama administration for a Department of Homeland Security decision to release hundreds of undocumented workers from immigration jails to cut costs. In a letter to Homeland Security Secretary Janet Napolitano obtained by BuzzFeed, the conservative charged that "using the sequester as an excuse to initiate this unprecedented mass release of illegal immigrants is a patently political and deliberate move that undermines law…