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