“Believe me, you'll hear about that issue,” Jay Sekulow, Trump’s longtime personal lawyer, told reporters Friday in the Capitol during brief remarks where he previewed how the president’s legal team planned to use its allotted 24 hours of time to air a long list of familiar Trump grievances, including unsubstantiated charges of corruption against Biden.

Trump’s Senate trial revolves around an abuse of power charge from the Democrat-controlled House — that he pressured his Ukrainian counterpart to investigate Biden and other political adversaries, in part by withholding $391 million dollars in military aid. The House also impeached Trump for obstructing their investigation into the alleged scheme.

The Trump team’s initial volley made no mention of the central witnesses Democrats said could conclusively confirm or rebut their case but were blocked by Trump. Democrats say that the weight of the evidence overwhelmingly supports their charges even without additional testimony, but that the Senate should demand those additional witnesses if they have any doubts.

Over three days this week, Democrats laid out a voluminous case against the president, and concluded by calling him an ongoing and “imminent threat” to national security who is likely to continually attempt to corrupt the 2020 election to his benefit. Schiff described Trump as a willing vessel for Russian propaganda aimed at hurting the U.S.-Ukraine alliance. And Democrats also sought to preemptively counter many of Trump’s anticipated attack lines.

The focus on Biden and Mueller is not the strategy most lawyers would take when a president’s job is on the line. But this is the Trump era and any norms from past impeachment fights appear to be out the window. More than anything, Trump’s lawyers are aiming to use their nationally-televised platform to stamp out any lingering consideration by a handful of Senate Republicans to join Democrats in demanding new witnesses and documents to aid their prosecution.

Whether that plan works remains to be seen -- a vote on the witness question looms next week and several GOP senators have suggested they’re still open-minded. Trump himself is a wildcard in that debate. He has at times demanded that Republicans call his own favored witnesses, including Biden, and at others has called for a swift rejection of Democrats’ case.