In May 2018, the Department of Justice filed a scathing brief scrutinizing Philadelphia law firm Brodsky & Smith for their recent slew of citizen suits brought on behalf of individuals in response to the surge in citizen suit filings since 2015. Things continued to heat up in June when the DOJ filed a Motion to Intervene and Opposition to Entry of Consent Decree in one of the three seminal cases singled out in its brief, Lunsford v. Arrowhead Brass Plumbing[1]. This post discusses the involvement of the DOJ in the suit and whether the opposition to consent decree was an overreach of their authority or necessary intervention.