The Chinese regime’s reported plan to create a secret eavesdropping facility in Cuba should be cause for alarm for everyone in the United States, according to lawmakers.

In its latest challenge aimed at the United States, China has reached a deal with Cuba to install an electronic spy base on the island, just about 100 miles from Florida, The Wall Street Journal reported, citing unnamed U.S. officials familiar with highly classified intelligence.

It would be close enough for Chinese intelligence services to garner electronic communications from the southeastern United States—home to many military bases—potentially including emails, phone calls, and satellite transmission data, the officials have said. They said Beijing agreed to pay Havana billions of dollars over the arrangement.

Revelation of the secret intelligence facility sparked wide concern in Washington.