Supreme Court case over $15K tax bill could impact wealth tax and broader tax code

Charles and Kathleen Moore are challenging a $15,000 tax bill they believe is unconstitutional.
The case is supported by business and conservative interests and could affect other parts of the tax code.
There are inconsistencies in the Moores' claims about their investment in an Indian company.
The case involves a provision imposing a one-time tax on investors' foreign profits.
Experts suspect the case may be aimed at prohibiting a potential wealth tax on billionaires.