The FCC has been skeptical of the latency of Starlink offerings, which are well below 100ms. See https://www.pcmag.com/news/fcc-has-serious-doubts-spacex-starl

The FCC has been skeptical of the latency of Starlink offerings, which are well below 100ms. See https://www.pcmag.com/news/fcc-has-serious-doubts-spacex-starlink-can-deliver-a-low-latency-internet https://www.pcmag.com/news/fcc-has-serious-doubts-spacex-sta... for an example. So, it might be that the senators aren't pushing that because the FCC has already been on the ball for latency, and pushing to keep latencies down around 30-40ms