Moore v. United States is relisted. The Supreme Court hasn't yet granted the appeal.
This is of interest as it's about direct taxes. Unapportioned direct taxes are unconstitutional under Article I Section 9. The 16th Amendment, which made income taxes contitutional without apportionment, is an exception to the unconstitutionality of unapportioned direct taxes; the provision was otherwise left in place.
A Trump-era amendment to the Internal Revenue Act taxes corporate earnings abroad on a one-time basis. The Moores owned 1/6 of a company supplying equipment to farmers in poor regions of India. The company was profitable but didn't pay dividends as dividends were always reinvested.
The Moores paid the tax but challenged it as an unapportioned direct tax. They lost at the Ninth Circuit because the Supreme Court has ruled that unrealized income may be taxed.
I'm keeping an eye on this.