Just in case you haven't seen this yet here we go.
The short of it is that the Copyright office is taking public comment on the DMCA. Comments end today (April 1st) at 11:59 EST.
I'm sure most of us, that view user created content, have seen the abuse the DMCA creates.
There are groups who file takedowns on content they do not own just to get the revenue. Groups that refile after clearing the same content. That use the DMCA to remove legitimate content just because they don't agree with it or actively do no like the creator. Takedowns are filed for content where the claims flat out do not exist. I could go on and on.
Bottom link contains a form letter, though personal touches to it or a custom comment are probably more helpful.Video of Doug from Nostalgia Critic making his case for why you should care.https://www.takedownabuse.org/#save-fair-use
For anyone curious here is the rambling mess I wrote.