Conversation so far:
what happened to John Marshall during the Adams administration?
John Marshall accepted appointment to a three-member commission to France
who were the other 2 members of the three-member comission to France John Marshall was appointed to?
Charles Cotesworth Pinckney and Elbridge Gerry
what was the three-member commissionto france with John Marshall, Charles Cotesworth Pinckney and Elbridge Gerry in charge of doing?
help bring an end to attacks on American shipping

Question: what were they negotiating about with France?
Self-contained rewrite: what were John Marshall Charles Cotesworth Pinckney and Elbridge Gerry  negotiating about with France?