Immigration links

For a different project I'm working on: 

- The American Immigration Council: Immigrants in Texas.
- The American Immigration Council: How the United States Immigration System Works.
- The University of Washington: Texas Migration History 1850-2017.
- Immigration to the United States: Events and Movements.
- SMU: US - Mexico Border Timeline.
- Wikipedia: Mexican Border War (1910-1919).
- Conner Prairie: Western Immigration. 
- Wikipedia: List of United States Immigration Laws. 
- Pew Research Center: How U.S. immigration laws and rules have changed through history.
- US Legal: The Naturalization Clause Law and Legal Definition.
- LII: 8 U.S. Code § 1101 - Definitions.
- TSHA: Texas Dream Act.