The FIA are looking into Red Bull's cars a little closer of late, and that has pleased McLaren boss Zak Brown.

The FIA has upheld its position on the Red Bull controversy in Austin, resolving concerns about a device that could alter ride height.

Formula One champions Red Bull have made changes to their car after discussions with the governing FIA, the team said on Thursday. The news came after the FIA issued a statement in response to concern from some teams about a possible exploitation of rules restricting work on a car between the start of qualifying and the race.