House Speaker Paul Ryan said Tuesday that Deputy Attorney General Rod Rosenstein, who hired special counsel Robert Mueller and has drawn the ire of President Donald Trump and House conservatives, is "doing a fine job."

Asked if it would be wise for Trump to fire Rosenstein, the Wisconsin Republican replied: "I have no reason to see why he should do that." Ryan noted that Rosenstein was hired after Trump won the 2016 election.

Rosenstein's future at the Justice Department has come into question as reports emerge about Trump's frustration with him. Some House Republicans appear set to criticize Rosenstein in a contentious memo that they argue undermines Mueller's probe into Russian efforts to influence the 2016 election and whether the Trump campaign coordinated with the Kremlin.

Rosenstein oversees the investigation because Attorney General Jeff Sessions recused himself from it. Rosenstein appointed Mueller as special counsel to handle the probe last year.