According to the TV program, "History Detectives," many of the Germans captured (by the US) in North Africa were taken to a POW camp built for them in Texas. Why was Texas chosen?

'The Lone Star State was chosen as the destination of so many POWs because of its ample supply of isolated space and because its mild climate kept construction and housing costs low.'

http://www.aiipowmia.com/inter24/in060615powcamp.html

That wasn't the reason the program gave, and, frankly, doesn't make sense. There are many places in the US whose conditions meet the reasons your source gives.

"During World War II more than 300,000 German POWs were captured in North Africa...with no where else to put them, they came to America.
"When they came the purpose was to not only house the prisoners but also put them to work in the place of the men that were going off for war," says Dr. Michael Waters. And where America needed help the most, was in rural areas. So the Robertson County community of Hearne became the site of the largest POW camp in Texas. The 5,000 prisoners nearly doubled Hearne's population."

Camp Hearne

According to the program, the prisoners, from Rommel's Afrika Corps, were put in Texas because of a Geneva Convention rule which stated that POWs should be housed in a climate similar to the one in which they were captured. It was determined that the American South most closely matched the climatic conditions in North Africa.

The TV show mentioned at the end of SR's link is the one I watched.
Jenny, Hearne, Texas is midway between Dallas and Houston and (MAP) does not have anything close to a mild climate. The average high temperatures for June, July, August, and September are 90.7F/32.6C, 95.3F/35.2C, 95.7F/35.4C, and 89.7F/32.0. The area also can suffer from torrential rainfall if a hurricane hits the Texas or Louisiana coast. There are also occasional tornadoes (22 since 1957) and serious thunderstorms. ("Over 12 inches of rain fell in Hearne, Texas, midway between Dallas and Houston, forcing residents to flee this town along the Brazos River.")

Looking at your source, I see that it says, " Interestingly, Texas also was favored because the Geneva Convention of 1929 required that prisoners of war be interned in a climate similar to that where they were captured. Apparently, Texas’ environment, bureaucrats decided, is similar to that of North Africa where the Americans and British had just defeated the Germans and Italians and from where the first round of POWs arrived." I don't think that North Africa has a mild climte. I know Texas doesn't. Other than that, it was a very interesting article.