Trump sued the department and agency last week for $10 billion over allegations they failed to prevent a former IRS contractor from leaking his tax returns, and those of his sons and his company, to news outlets.

President Trump, Donald Trump Jr., and Eric Trump filed a $10 billion lawsuit against the Internal Revenue Service (IRS) and Treasury Department Thursday, blaming the federal agencies for leaks of their confidential tax information.

President Donald Trump is suing the US Internal Revenue Service and Treasury Department for at least $10 billion, accusing the agency of an unathorized leak of his tax returns during his first administration.

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The Miami federal court lawsuit says the IRS and Treasury failed to prevent the leak of Trump's tax records by former IRS employee Charles Littlejohn.

President Donald Trump sued the US Treasury and Internal Revenue Service for at least $10 billion over an unauthorized disclosure of his tax returns to the press during his first term in office.

The president argued in the lawsuit that the agencies failed to prevent a former contractor from leaking his tax returns from nearly a decade ago to news outlets.