Tuhia he tomokanga mō tēnei wāhanga - I te tīmatanga o te Pakanga o Mexico ki Amerika i te Pipiri 1846, i whakahoutia a Van Buren ki te ope taua hei kaitiaki utu me te taumata o te rangatira. I mahi a Van Buren hei kaiawhina mo nga Tiamana a Zachary Taylor me Winfield Scott ka uru ki te Pakanga o Contreras, Pakanga o Monterrey, Siege o Veracruz
, Te Pakanga o Cerro Gordo, me te Pakanga o Churubusco.