Consider Freddy Fender or Lee Trevino.
The US annexation of Texas.
Yes, it resulted in the Mexican Cession and the Treaty of Guadalupe Hidalgo.
Congress voted to annex Texas
It had been annexed by the US.
They gained the annexation of Texas.
California and Texas
The Mexican Cession and the annexation of Texas achieved Manifest Destiny for the US.
The Mexican American War.
The US got clear ownership of Texas. The US also had a surge in patriotism.
It had already annexed Texas from the Republic of Texas, but it gained California and the American Southwest in the Mexican American War.
Texas fought for Independence from Mexico and gained it in the Treaties of Velasco. The US then annexed Texas which resulted in the Mexican American War.
Sam Houston was an American (he was born in Virginia). He had fought the Mexicans 10 years earlier in the Texas Revolution (1836) and was a US Senator during the Mexican-American War.