Democratic US lawmaker says he is probing Pompeo’s Republican convention appearance

An "errand boy": US Secretary of State Mike Pompeo

Take him to court he has SCOTUS protection says Trump (ODT)

The chairman of a Democratic-led US House of Representatives subcommittee announced on Tuesday an investigation into whether Secretary of State Mike Pompeo’s appearance at the Republican National Convention breaks federal law and regulations.

Democratic US lawmaker says he is probing Pompeo’s Republican convention appearance