President Johnson and Mexican President Gustavo Di­az Ordaz, with their wives, celebrate the dedication of the Chamizal Monument in Juarez, Mexico, on Oct. 28, 1967. The monument signified the international boundary marker between the two countries, designated in 1964. Yoichi Okam/Courtesy of the LBJ Presidential Library hide caption

itoggle caption Yoichi Okam/Courtesy of the LBJ Presidential Library

Low water levels, like at this reservoir near Gustine, Calif., bring birds and mosquitoes together and help transmit West Nile virus to humans. Rich Pedroncelli/AP hide caption

itoggle caption Rich Pedroncelli/AP

Abortion-rights advocates filled the rotunda of the state capitol in July 2013 as Texas senators debated sweeping abortion restrictions. Some of those restrictions are now under federal review. Tamir Kalifa/AP hide caption

itoggle caption Tamir Kalifa/AP

Dr. Lester Minto closes his clinic, Reproductive Services of Harlingen, after 35 years. Lisa Krantz/San Antonio Express-News/Zuma Press hide caption

itoggle caption Lisa Krantz/San Antonio Express-News/Zuma Press

More than 350 towns and cities in Texas have banned new billboards, but billboards companies are still pressing for new and taller signs. John Burnett hide caption

itoggle caption John Burnett

Opponents and supporters of a law that restricts abortion in Texas rallied outside the Texas Capitol in Austin as the bill was debated in July 2013. Eric Gay/AP hide caption

itoggle caption Eric Gay/AP

The Hilltop Women's Reproductive Clinic in El Paso, Texas, is expected to close if a state law is upheld by a federal judge. Juan Carlos Llorca/AP hide caption

itoggle caption Juan Carlos Llorca/AP

Leon Evans, director of the community mental health system for Bexar County and San Antonio, broke through barriers that had hindered care. Jenny Gold/Kaiser Health News hide caption

itoggle caption Jenny Gold/Kaiser Health News

Texas gubernatorial hopeful and state Sen. Wendy Davis came to prominence when she opposed legislation restricting abortions. The bill eventually became law and is now blamed for the closure of abortion clinics across the state. LM Otero/AP hide caption

itoggle caption LM Otero/AP