Xiaomi is suing the US Treasury Department and the Department of Defense in an effort to overturn a Trump administration ban.

Xiaomi, along with Huawei and ZTE, were banned by the Trump administration over national security concerns. Xiaomi was accused of having close ties with the People’s Liberation Army.

The company is now challenging the ban, according to Bloomberg, suing the US Treasury and Defense departments.

“Xiaomi faces imminent, severe, and irreparable harm if the Designation remains in place and the restrictions take effect,” the company said in its court filing, naming Defense Secretary Lloyd Austin and Treasury Secretary Janet Yellen as defendants.

It remains to be seen what action the Biden administration will take against Chinese firms, and whether it will uphold past action. It’s clear, however, that Xiaomi is testing the waters to see if the the change of administration will result in a change of policy.