In December 2021 utilities and other groups petitioned the Federal Communications Commission (FCC) to delay opening the 6 GHz to unlicensed users because "a new generation of unlicensed 6G routers and other wireless devices" could cause dangerous inference issues.  Various noteworthy groups have continued to warn the FCC (see 1, 2).  Nevertheless, the regulatory agency recently approved testing anyway.  From RCR Wireless:

FCC conditionally approves AFC systems for 6 GHz Wi-Fi operation

By Catherine Sbeglia Nin

'This is good news and real progress': FCC Chairwoman Rosenworcel

The Federal Communications Commission's (FCC) Office of Engineering and Technology announced the conditional approval of thirteen proposed automated frequency coordination (AFC) database systems in preparation for the testing phase of 6 GHz Wi-Fi operations.

AFC is a spectrum use coordination system designed to mitigate interference in the 6 GHz band between unlicensed Wi-Fi 6E and 7 devices and the licensed users already occupying that band. It resembles similar systems in place such as the one that supports CBRS wireless operation.

Because the 6 GHz band was already occupied by incumbent users, the FCC imposed significant restrictions on the Wi-Fi devices looking to transmit in this band. To avoid potential interference with existing 6 GHz incumbents, the FCC defined two types of device classifications with different transmit power rules for Wi-Fi devices operating on the band: low-power access points (APs) for indoor Wi-Fi and standard-power APs that can be used indoors and outdoors.