His White House accomplishments include the Clayton-Bulwer Treaty before his career came to a tragic end.  
Among his early accomplishments were receiving Black Hawks surrender and defeating the Seminoles at Lake Okeechobe.  President Polk took most of his best troops away from him because he feared him as a political rival; ironically, he used his much smaller force to win the Battle of Buena Vista.    His White House accomplishments include the Clayton-Bulwer Treaty before his career came to a tragic end.  For ten points, name this general, whose fame propelled him past Lewis Cass and into the Presidency in 1848, the 12th President of the United States.
Among his early accomplishments were receiving Black Hawks surrender and defeating the Seminoles at Lake Okeechobe.  
Zachary {Taylor}