Obama's labor secretary was feared by conservatives but lost love from liberals.
Under his belt as Labor Secretary, Tom Perez can point to landmark regulations on pension management and the classification of contractors versus employees. He also negotiated a settlement that favorably ended the massive Verizon strike last year. During a previous stint at the DOJ, he was a forceful champion for enforcement of disability protections and a prolific prosecutor of hate crimes.
Though Perez was cast by Breitbart as the most radical member of the Cabinet in a half-century, he's gaining little favor from the Democratic left flank during his current campaign for DNC chair. Their complaints include his support for the Trans-Pacific Partnership, which puts him at odds with organized labor, and machinations against Sanders perceived as underhanded.