Are there even consumer-grade routers that are produced in the USA...?

[0] https://mono.si/

    The FCC maintains a list of equipment and services (Covered List) 
    that have been determined to “pose an unacceptable risk to the
    national security

    Recently, malicious state and non-state sponsored cyber attackers
    have increasingly leveraged the vulnerabilities in small and home
    office routers produced abroad to carry out direct attacks against
    American civilians in their homes.

Manufacturers have never had to care about security because no Gov agency would ever mandate secure firmware. This includes the FCC which license their devices and the FTC who (until recently) had the direct mandate to protect consumers.

Our most recent step backward was to gut those agencies of any ability to provide consumer oversight. All they they can do now is craft protectionist policies that favor campaign donors.

The US has a bazillion devices with crap security because we set ourselves up for this.

The FCC's power just got substantially nerfed, and "we've decided to slow lane all foreign-made routers" feels like that may have been beaten on the old, higher, standard. Let alone the new one that gives the FCC almost no power.