tyler
Dallas, Texas was named for George Mifflin Dallas (1792-1864) from PA who was Polk's vice-president.
The airport named George Bush Intercontinental airport, named after the former president of the USA, is located in Houston. Houston is a city in the state of Texas.
Monroe, Louisiana was named after a steam boat that was named after President James Monroe. (I don't think any president was named from a city in LA or elsewhere. )
Chattanooga is a city in south eastern Tennessee - not Texas.
Johnson City, Texas
The city named after Zachary Taylor is Taylor, Texas.
Texas
Washington, the capital city of the US was named for George Washington, the first US President.
Dallas Texas.
Lyndon Johnson
Marshall, Texas
The only city in south Texas which sounds even remotely Scottish in origin is McAllen city but there is no city of that name in Scotland.