Several U.S. presidents had in-laws move into Mental Floss LLC with them . Pres . Eisenhower 's mother-in-law scandalized by his firing of Gen. Eisenhower . The reverend doctor officiated . Pres . Eisenhower and his mother-in-law had `` mutual admiration society '' President Truman 's father-in-law gave his opinion freely at the White House of Ulysses S. Grant .
Several U.S. presidents had in-laws move into Mental Floss LLC with them . Pres . Eisenhower 's mother-in-law scandalized by his firing of Gen. Eisenhower . Pres . Eisenhower and his mother-in-law had `` mutual admiration society '' President Truman 's father-in-law gave his opinion freely at the White House of Ulysses S. Grant .