Labour MP Fiona Onasanya is due to appear in court next month after being charged with perverting the course of justice.
The Peterborough MP, who was elected to parliament at last year’s snap general election, appeared at Westminster Magistrate’s Court on 12 July and is due to appear in court again on 13 August.
The 34-year-old, a former solicitor and local councillor, also serves in Labour’s whips office.
Ms Onasanya has previously said she wants to be Britain’s first black female prime minister.
She defeated former Conservative MP Stewart Jackson at last June’s election, with her rival going on to serve as ex-Brexit secretary David Davis’ chief of staff.
Mr Jackson left the role when Mr Davis resigned from government earlier this month.
A Cambridgeshire Police spokeswoman said: “Fiona Oluyinka Onasanya, 34, from Peterborough has been charged with one count of perverting the course of justice.
“She appeared at Westminster Magistrate’s Court on 12 July and is due to appear in court again on 13 August.”
Ms Onasanya’s office are not commenting.
Perverting the course of justice carries a maximum penalty of life imprisonment and/or a fine.