The Department of Justice said on Tuesday it is appealing against a federal judge’s ruling that temporarily blocked the Trump administration from phasing out the Obama-era program granting protections to young, undocumented immigrants – and asking the supreme court to intervene. The department said it had filed an appeal in the ninth circuit court and intends to “take the rare step” later this week of seeking a fast track to the supreme court. The announcement came as the fate of nearly 700,000 Dreamers, who were brought to the US as children, has raised the specter of a government shutdown with lawmakers in Washington at an impasse over immigration.