Texans first voted in favour of annexation by the U.S. in 1836. However, the notion was rejected by President Jackson and President Van Buren. For its part, Great Britain supported independence for Texas. In 1845, annexation was finally approved by the people of Texas and the U.S. Congress. Shortly thereafter, the U.S. went to war with Mexico. Both Winfield Scott and Zachary Taylor invaded Mexico. On 14 September 1847, Scott captured Mexico City and dictated terms to the Mexicans. On 2 February 1848, in the Treaty of Guadalupe Hildago, Mexico gave up any claim to Texas and ceded land now in Arizona, California, Colorado,