Cory Booker at the moment filibustering at the senate as a protest against the whole trump administration . He is speaking for as long as he is physically able too, as stated by him in the CSPAN clip, https://www.c-span.org/clip/us-senate/sen-cory-booker-d-nj-starts-speaking-in-senate-for-as-long-as-i-am-physically-able/5158775
Here is an article that states why he is on the senate floor if you need clarification https://www.cnn.com/2025/03/31/politics/booker-senate-floor-speech-trump-protest/index.html
They’re doing plenty more than this, but they’re not self-promoting enough for people to notice. Democrats voted and spoke out against Trump’s cabinet nominations, forced a 15-day vote against Trump’s executive order, confirmed Biden’s pending judicial appointments when Republican attendance is low, and are the ones bringing these cases to the courts. They are doing everything they can to stop this from the minority.