Washington | Propelled by stunning political wins for Scott Morrison and Boris Johnson this year, Sir Lynton Crosby's US office has been quietly ramping up its operations ahead of the blockbuster 2020 presidential campaign.

While the US business doesn't run the kind of party political campaigns that have made the London-based C|T Group famous in Australia, Britain and New Zealand, its US wing deploys many of the same techniques on behalf of corporate clients wrestling the US capital's policy and regulatory jungles.