Several Democrat lawmakers said on Feb. 2 that Robert F. Kennedy Jr. should commit to avoiding all decisions related to vaccines if he becomes the next U.S. health secretary.“Given the breadth of your involvement in vaccine litigation, such a recusal would help ensure that you and your family do not benefit financially from official government actions that you will oversee and control,” Sen. Ron Wyden (D-Ore.), ranking member of the Senate Finance Committee, and Sen. Elizabeth Warren (D-Mass.), wrote in a letter to Kennedy.President Donald Trump has selected Kennedy, a lawyer, to take over the U.S. Department of Health and...