Where to go in Houston to apply for a visa to China

I will be going to China as a tourist later this Summer. I am currently applying for a US passport, once I get that I will apply for it, but on several websites I have looked at applications are for residents of China. I can't find where to go to to find out where to apply in Houston, Texas to visit a friend who lives in Changsha and to tour. My e-mail is:

rrichmanbcm.edu

Thank you