When the impeachment trial resumes Wednesday, U.S. Sen. Michael Bennet, a presidential contender, plans to ask about the precedents President Donald Trump would be setting for future commanders in chief if his actions are left unchecked by the Senate.

Senators will have 16 hours spread over two days — Wednesday and Thursday — to ask written questions of impeachment managers and White House defense attorneys. Supreme Court Chief Justice John Roberts, who is presiding, will read aloud the question, along with who asked it and to which side it is directed.

Bennet, a Denver Democrat, has prepared two questions, according to his office, but may ask more. His questions are for impeachment managers — the seven House Democrats who act as prosecutors in the impeachment trial, a group that includes Rep. Jason Crow of Aurora.

“If future U.S. presidents base foreign policy decisions on personal benefit and political gain, how would that affect our relationships with our allies and our adversaries? What would be the long-term effect on U.S. influence and credibility in the world?” Bennet plans to ask, a two-part question that may be answered by Crow, who has handled some of the foreign policy arguments for Democratic prosecutors.

Trump was impeached last month for abuse of power and obstruction of Congress after withholding military aid to Ukraine in an attempt to solicit an investigation into the family of Joe Biden, a possible Democratic opponent to Trump in the 2020 election, and a top Democratic primary opponent to Bennet.

Bennet’s other question is centered on the second article of impeachment, for obstruction of Congress.

“If the Senate accepts the president’s blanket assertion of privilege in the House impeachment inquiry, what are the consequences to the American people? How will the Senate ensure that the current president or a future president will remain transparent and accountable?” the senator plans to ask.

On a conference call with reporters Tuesday morning, Crow and Rep. Zoe Lofgren, an impeachment manager from California, answered a similar question.

“If that’s the way we’re going to move forward, there’s not going to be any oversight in the future,” Lofgren said. “If the president can do anything he wants and get away with it, the balance of power between the three branches (of government) is going to be shifted considerably.”

After two days of senators’ questions, the Senate could vote Friday on whether to subpoena witnesses. If it decides not to subpoena any witnesses in the trial, Trump could be acquitted by week’s end. However, Majority Leader Mitch McConnell told fellow Republicans behind closed doors Tuesday that he doesn’t yet have the votes to block new witnesses, the Associated Press reported.