AdvertisementWhether participating in glittery dinners with heads of state, or tête-à-têtes in the Oval Office, Andrew Liveris, the chief executive of Dow Chemical, has regularly visited the White House.He served as co-chairman of President Obama’s Advanced Manufacturing Partnership. He stood beside the president onstage at events.Many of these Washington appearances by Mr. Liveris — which have totaled more than two dozen since 2009 — were arranged with the help of Teneo, an advisory firm with close ties to the Democratic establishment. Dow is Teneo’s biggest and most lucrative account,...…AdvertisementWhether participating in glittery dinners with heads of state, or tête-à-têtes in the Oval Office, Andrew Liveris, the chief executive of Dow Chemical, has regularly visited the White House.He served as co-chairman of President Obama’s Advanced Manufacturing Partnership. He stood beside the president onstage at events.Many of these Washington appearances by Mr. Liveris — which have totaled more than two dozen since 2009 — were arranged with the help of Teneo, an advisory firm with close ties to the Democratic establishment. Dow is Teneo’s biggest and most lucrative account,...WW…