(CNN) Democrats from the House and Senate have told a federal judge they'd like to begin pursuing President Donald Trump's personal financial records and corporate records next month as part of a lawsuit over his business properties.

The request has not yet been approved by a judge. But if the timeline is approved, this case would add yet another layer to various pursuits by members of Congress of Trump's financial history.

Democrats claim they did not have the opportunity to consider and approve Trump's business proceeds from foreign governments when he became President. So they want to begin collecting evidence -- both documents and depositions -- from banks, from Trump Organization subsidiaries and from his trust account beginning in late June.

They're specifically seeking information about Trump companies that accept certain benefits from foreign governments, such as through intellectual property and other regulatory approvals, and payments from the governments toward Trump licensing, real estate and hotel rooms, conferences and events.

The Democrats claim Trump has violated the Constitution by not allowing them to review his business interests, and noted that he's flouted the practice of past presidents who've divested their holdings while in office and notified Congress of what they accept from foreign powers.

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