Lawmakers don’t just want to muscle Chinese telecom giants Huawei and ZTE out of doing business with the federal government. They’re also ratcheting up pressure on private organizations to sever ties with the companies, which they say help Beijing spy on Americans.

In a sharply worded letter to Google this week, lawmakers from both parties called on chief executive Sundar Pichai to rethink a long-standing partnership with Huawei in light of repeated warnings from the U.S. intelligence community that the company could use its products as a conduit for state-sponsored espionage.

A separate letter this week from an even larger group of lawmakers called on Education Secretary Betsy DeVos to press dozens of academic institutions for information about research relationships they’ve forged with Huawei. The lawmakers warned that Huawei could use its access to the U.S. education system to collect intelligence.

Read more: The Washington Post