An official ethical investigation into a US congressman involving his participation in a video for Riot Games' immensely popular MOBA League of Legends has cleared the lawmaker of wrongdoing.

The Committee on Ethics (via Polygon) recently published its official report regarding Colorado congressman Jared Polis, summarizing its findings thusly:

"Following its review, the Committee concluded that Representative Polis' participation in the Riot Games video and the Ninox event did not violate any law or House Rules regarding official endorsements or the use of official resources for the promotion of a business endeavor."

It was alleged that Polis' participation in multiple videos, including one that was officially produced by Riot Games, "could be perceived as official endorsements of those businesses and that he used official resources in promoting the businesses." The other video for was an advertising event for Ninox Designs, a non-gaming men's clothing company based in Polis' district in Colorado.

"There was substantial reason to believe that Representative Polis engaged in activities that could be perceived as endorsements of Riot Games and Ninox and that he used official resources in promoting the businesses, in violation of federal law and House Rules," the Office of Congressional Ethics said. "For that reason, OCE recommended that the Committee further review these allegations."

As stated above, these allegations were reviewed and Polis has now been cleared. The matter has been dismissed, and deemed officially closed. No further action will be taken.

Polis is a big-time League of Legends fan and player himself. Given that, Riot Games reached out to him to see if he'd be interested in participating in a promotional video for League of Legends. He agreed, and the video officially aired on April 27, 2015. You can watch it above.

"Representative Polis viewed his participation in the video as part of his representational duties," reads a line from the report. "He told OCE that he agreed to be featured in the video because it would be a way to interact with constituents who play League of Legends. He said that from his perspective, the purpose of the video was to provide journalistic content to the League of Legends community.

"Representative Polis' staff perceived the video in the same way. His Chief of Staff and Scheduler told OCE that they understood that the video would be a documentary about the Congressman. Representative Polis did not view the video as endorsing a product because he did not tell people to play the game or to buy anything. Instead, to the extent Representative Polis discussed his love of the game, he viewed those comments as biographical and compared them to telling a reporter he is a Colorado Rockies fan."

You can read the full OCE report here.