(Bloomberg) -- Joe Biden -- accusing Donald Trump of presiding over "the most corrupt administration in modern history" -- proposed a ban on lobbying by foreign governments and the creation of a federal corruption watchdog agency.

Biden on Monday also pledged to introduce a constitutional amendment that would eliminate private funding for federal elections as part of a broad anti-corruption plan that his campaign said will "ensure no future president can ever again abuse the office for personal gain." The roll out comes as Biden is under siege from Republicans over discredited allegations about his son Hunter’s business dealings in Ukraine and China.

Biden’s proposal would aim to bar presidents from "improperly interfering" in federal investigations and includes a pledge to issue an executive order to bar White House staff from obstructing Justice Department probes following a Bloomberg report that Trump pressured then-Secretary of State Rex Tillerson to persuade DOJ to drop a criminal case against an Iranian-Turkish gold trader who was a client of Rudy Giuliani.

COMING UP

The fourth Democratic debate is scheduled for Oct. 15 at Otterbein University in Westerville, Ohio. Twelve candidates are slated to take part: Biden, Elizabeth Warren, Bernie Sanders, Cory Booker, Pete Buttigieg, Julian Castro, Kamala Harris, Amy Klobuchar and Beto O’Rourke, Tulsi Gabbard, Tom Steyer and Andrew Yang.

To contact the reporter on this story: Caitlin Webber in Washington at cwebber4@bloomberg.net

To contact the editors responsible for this story: Wendy Benjaminson at wbenjaminson@bloomberg.net, Kathleen Hunter, Kasia Klimasinska

©2019 Bloomberg L.P.