C-SPAN has thousands of United States related videos. As of today, they are claiming 252,938,057 total video views of items in their Video Library. Would it be possible to add it as one of the Extension:EmbedVideo#Supported services?
Topic on Extension talk:EmbedVideo
An example embed code from https://www.c-span.org/video/?515241-1/president-biden-arrival-chicago is below.
<iframe width=512 height=330 src='https://www.c-span.org/video/standalone/?515241-1/president-biden-arrival-chicago' allowfullscreen='allowfullscreen' frameborder=0></iframe>