when did herbert hoover become president?
3/4/1929
contradiction
 = = = Appointment of Gerald Ford as Vice President ( 1973 ) = = = 

entailment
 He only left the continental United States on two other occasions ( to Puerto Rico , the Virgin Islands , Guantanamo Bay Naval Base , Cuba , February 20 – March 5 , 1948 ; and to Wake Island , October 11 – 18 , 1950 ) during his nearly eight years in office . 

contradiction
 In light of his loss of political support and the near @-@ certainty of impeachment , Nixon resigned the office of the presidency on August 9 , 1974 , after addressing the nation on television the previous evening . The resignation speech was delivered from the Oval Office and was carried live on radio and television . Nixon stated that he was resigning for the good of the country and asked the nation to support the new president , Gerald Ford . Nixon went on to review the accomplishments of his presidency , especially in foreign policy . He defended his record as president , quoting from Theodore Roosevelt 's 1910 speech Citizenship in a Republic : 

entailment
 In the summer of 1927 , Coolidge vacationed in the Black Hills of South Dakota , where he engaged in horseback riding and fly fishing and attended rodeos . He made Custer State Park his " summer White House . " While on vacation , Coolidge surprisingly issued a terse statement that he would not seek a second full term as president : " I do not choose to run for President in 1928 . " After allowing the reporters to take that in , Coolidge elaborated . " If I take another term , I will be in the White House till 1933 … Ten years in Washington is longer than any other man has had it — too long ! " In his memoirs , Coolidge explained his decision not to run : " The Presidential office takes a heavy toll of those who occupy it and those who are dear to them . While we should not refuse to spend and be spent in the service of our country , it is hazardous to attempt what we feel is beyond our strength to accomplish . " After leaving office , he and Grace returned to Northampton , where he wrote his memoirs . The Republicans retained the White House in 1928 in the person of Coolidge 's Secretary of Commerce , Herbert Hoover . Coolidge had been reluctant to endorse Hoover as his successor ; on one occasion he remarked that " for six years that man has given me unsolicited advice — all of it bad . " Even so , Coolidge had no desire to split the party by publicly opposing the nomination of the popular commerce secretary . 

contradiction
 On November 12 , 1896 , the President @-@ elect wrote to his longtime friend , offering him a position in his Cabinet , and stating : 
