Toxin by Paul Martin Midden

Jake Telemark, a junior US Senator, is ensnared in a plot he can scarcely believe, but one which targets him along with his friends and associates. Called upon to re-open a part of his life long hidden, Jake must confront his own past as he faces rising turmoil in the nation he loves and serves. The beautiful Isadore Hathaway beckons him, supports him, and directs him to pick up arms on behalf of himself, his country, and, in the end, their relationship.