We have and use both.
I just not heard the United States take in China as active as the Chinese in the USA. I know the United States and Taiwan have a cooperative intelligence-sharing agreement that allows both the US National Security Agency (NSA) and Taiwan’s National Security Bureau (NSB) to listen in on mainland Chinese military communications in both the Nanjing and Guangzhou military regions. With the assistance of the NSA, Taiwan has constructed a signal intelligence (SIGINT) base at Pingtung Lee on Yangmingshan Mountain just north of Taipei, which has been operating for at least 15 years.