“Such conduct,” Mr Sherman writes in the article, “warrants impeachment and trial, and removal from office.”
To take effect, however, articles of impeachment must pass the House by a majority vote which is unlikely considering Republicans are majority . So far, only one other Democrat – Texas Representative Al Green – has publicly expressed support for impeachment proceedings.
The Constitution allows impeachment in the case of “treason, bribery, or other high crimes and misdemeanours”. Obstruction of justice is a felony offence.