At a Wednesday night town-hall event in Miami, President Obama told a crowd of young Latinos that Republicans are to blame for stalling changes to immigration laws. The president’s executive order on immigration, which would shield as many as 4.7 million undocumented immigrants from deportation and offer work permits, was supposed to take effect this week but has been blocked by a Texas judge. Obama urged the crowd to take action by holding Republicans accountable in the 2016 election. He also expressed confidence that his administration can put the executive actions into effect, though the legal battle “will take a couple of months.”