Ryan Lucas

Updated at 10:09 p.m. ET

Attorney General Jeff Sessions says he is not appointing — for now — a second special counsel to investigate allegations of wrongdoing by the FBI and Justice Department, telling Republican lawmakers that he has already asked a veteran prosecutor to look into the matter.

Republicans on Capitol Hill, including the chairmen of the Senate and House judiciary committees, have ramped up their push in recent weeks for a second special counsel to investigate what they say was misconduct by the FBI and Justice Department in 2016 and 2017.

The Justice Department's internal watchdog says it will launch a review in response to allegations by Republican lawmakers that the department and the FBI abused their surveillance authorities to target a former Trump campaign adviser in the early days of the DOJ's Russia investigation.

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Updated at 12:12 p.m. ET

The Trump administration imposed new sanctions against Russia on Thursday, slapping punitive measures on 19 people and five entities over their alleged role in Moscow's interference in the 2016 election and other "destructive" cyberattacks.

Updated at 3:30 p.m. ET

As students staged a national walkout Wednesday morning over gun violence, senior federal officials sat down for a grilling from Congress over law enforcement's failure to act on tips about the suspect in last month's school shooting in Parkland, Fla.

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