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CNN — Try to keep track of the galaxy of former President Donald Trump’s legal problems.

A judge in New York will hear Trump explain on Monday, under oath and in a witness box, why his company inflated the value of his assets when he was trying to secure loans.

A judge in Colorado heard testimony this past week from January 6, 2021, rally organizers as she considers whether Trump engaged in an insurrection against the US and thus should be disqualified from the presidential ballot in 2024.

A federal appeals court in Washington, DC, temporarily froze a limited gag order placed on the former president by the judge overseeing his forthcoming federal election subversion trial.

A federal judge in Florida signaled she may postpone the federal criminal trial against Trump that she’s overseeing – the one regarding his treatment of classified material that was, among other places, kept in a bathroom at his Mar-a-Lago resort – because how could his lawyers keep up with all of this?

Trump denies any wrongdoing in all legal matters and has pleaded not guilty in all of the criminal cases – which relate not just to his efforts to remain president by overturning the 2020 election and his treatment of classified material after his presidency but also to a hush-money scheme that may have helped him win the White House in 2016.

He alleges a “witch hunt” against him and says the varied legal actions are examples of election interference to keep him from the White House. But each trial has its own distinct storyline to follow.

Here’s an updated list of developments in Trump’s very complicated set of court cases, beginning with a quick historical note about former presidents as witnesses in their own defense.

Has a former president ever given testimony in his own civil trial?

When Trump takes the stand in his New York civil fraud trial Monday, it won’t be the first time a former president will have given testimony in his own defense in a lawsuit.

Teddy Roosevelt did it twice more than a hundred years ago, both when he sued a Michigan newspaper that accused him of being a drunk and later when he was sued by a fellow New York Republican whom Roosevelt had called a corrupt political boss.

Roosevelt won both cases. Trump, by contrast, has already been found liable for fraud by the judge in New York.

Those Roosevelt trials, separated by two years, were each sensational at the time, and they came after Roosevelt’s final campaign for the White House, when he placed second to Democrat Woodrow Wilson in 1912 after splitting with Republicans and running as a Progressive.

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