(The Center Square) - Let's Go Washington filed a supplemental brief to the state Supreme Court for its lawsuit to force a referendum on the millionaire's tax that cited information The Center Square published in an exclusive story revealing Democrats' internal communications about the bill.

Among records obtained under state open records laws was a Dec. 11 email sent to Sen. Jamie Pedersen, D-Seattle, regarding a draft bill that Pedersen specifically said was meant to overturn a 1933 State Supreme Court decision prohibiting a progressive income tax. That 1933 decision has been unanimously upheld by every state Supreme Court since.

Originally published on thecentersquare.com, part of the BLOX Digital Content Exchange.