As of 9:30 a.m. ## Watch on Deadline

Before he started at 7 p.m. Bookers speech covered a range of topics.

He warned that Trump would cut Medicaid.

He decried the presidents attacks on law firms.

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Cory BookerC-SPAN screenshot

He blasted the administration for siding with Russia in a UN vote.

He also quoted from others, including Margaret Chase Smith and John Lewis.

Depending on how long he speaks, Booker could disrupt Senate business today.

Donald Trump and ABC News' Terry Moran

Booker was still going at 3 p.m. Watch the speech for as long as it lasts below.