FBI had FISA order to monitor Trump adviser because of links with Russia

According to the Washington Post, the FBI had a FISA order from a judge to monitor the communications of Carter Page, an adviser to Donald Trump during the 2016 presidential campaign.

A FISA order allows the FBI to monitors the communications of anyone suspected of illegal activities when there's sufficient evidence to convince the judge the person should me monitored.

In this case, a federal judge considered there was enough evidence to allow the FBI and the Justice Department to monitor Carter Page after he was suspected of working with Russia. The order was obtained during the summer of 2016.

From the Washington Post:

This is the clearest evidence so far that the FBI had reason to believe during the 2016 presidential campaign that a Trump campaign adviser was in touch with Russian agents. Such contacts are now at the center of an investigation into whether the campaign coordinated with the Russian government to swing the election in Trump’s favor.

Page, however, has not been charged with any crimes.