Tim Mak

The Russia investigation has shown few signs of having an impact in this year's congressional elections, but there's a House race in Orange County, Calif., where Vladimir Putin looms large.

In fact, the congressman running for re-election there says he once arm wrestled the Russian president.

Updated on March 6 at 11:45 a.m. ET

A former campaign aide to Donald Trump appears to have changed his mind and will not fight a subpoena he says he has received in the Russia investigation — after daring special counsel Robert Mueller to arrest him in multiple media appearances.

Sam Nunberg called reporters and TV news programs on Monday and said live that he'd gotten a grand jury subpoena as part of Mueller's investigation asking for communications with other people in the Trump orbit — but that he would not comply.

Outside a Trump campaign rally in West Palm Beach, Fla., there was a cage holding a person dressed up like Hillary Clinton in a prison uniform. In the outrageous state of the 2016 campaign, it wasn't altogether shocking to see someone at a Trump event staging the visual stunt, after the "lock her up!" chants that punctuated Trump rallies.

But it's now known that this moment was set up by Russians.

A liberal group is filing a complaint with the Federal Election Commission on Monday to demand an investigation into whether the National Rifle Association took contributions from Russians, which would be a violation of the law.