Bioethics and medical experts are among the witnesses expected to testify.
Although Senate ethics rules prohibit campaigning in the Capitol, the 2016 presidential candidate spent much of his five-plus minutes in front of reporters highlighting the differences between himself and fellow Democratic candidate Hillary Rodham Clinton, who visited with lawmakers on Capitol Hill Tuesday.
“I’m not campaigning here,” Sanders said, when asked about the chamber’s ethics rules. “You’re asking me questions about it."
When asked Thursday about a Politico report on Rep. Bill Shuster’s relationship with a top aviation lobbyist, Speaker John A. Boehner said he would not comment on the Pennsylvania Republican's relationship with anyone, but said he is “comfortable” with ethics protocols to prevent conflicts of interest between members and lobbyists.