On Thursday, the Senate launched the second day of opening arguments in President Donald Trump's historic impeachment trial.

House impeachment managers — lawmakers who act as prosecutors in the trial — laid out the constitutional groundwork for impeachment.

Among other things, they discussed legal precedent supporting Trump's removal from office, what constitutes abuse of power, and why the president's conduct rises to the level of an impeachable offense.

Scroll down to watch the hearing and follow Insider's live coverage of the trial.

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On Thursday, the Senate began the second day of opening arguments in President Donald Trump's historic impeachment trial.

Trump is the third US president to be impeached. The House of Representatives charged him last month with abuse of power and obstruction of Congress related to his efforts to force Ukraine to pursue politically motivated investigations against his rivals while withholding vital security assistance and a White House meeting that Ukrainian President Volodymyr Zelensky desperately sought.

Trump's trial officially began last week, and House impeachment managers — lawmakers who act as prosecutors against the president — began presenting their opening arguments on Wednesday.

Read Insider's coverage of day one of opening arguments here.

On Thursday, House prosecutors laid out the constitutional groundwork for impeachment. Among other things, they discussed legal precedent supporting Trump's removal from office, what constitutes abuse of power, and why the president's conduct rises to the level of an impeachable offense.

The proceedings began at 1 p.m. ET.

C-SPAN and TV networks are relying on the Senate's live feed of the trial.

C-SPAN is airing the trial at cspan.org.

Watch day 2 of opening arguments below:

Scroll down to follow Insider's live coverage