President-elect Trump’s transition team knew that nominating Jeff Sessions for Attorney General would set off controversy. Democrats and their allies in the press have at key times in the past called Sessions a racist — they’re now using the Alabama senator’s full name, Jefferson Beauregard Sessions III, to heighten the Old South effect — and now, as they oppose Trump at nearly every turn, they’ve turned to race again.

Here’s why the effort to stop Sessions is likely to intensify as his confirmation hearings near. Sessions is the Senate’s highest-profile, most determined, and most knowledgeable opponent of comprehensive immigration reform. Democrats are particularly anxious about immigration because of the unusually tenuous nature of President Obama’s policies on the issue. Those policies can be undone unilaterally, by the new president in some cases, and by the attorney general and head of homeland security in other cases. There’s no need for congressional action — and no way for House or Senate Democrats to slow or stop it.