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Lawsuit argues Washington’s new 9.9% millionaires tax violates state constitution
https://thenationaldesk.com/top-videos/lawsuit-argues-washingtons-new-99-millionaires-tax-violates-state-constitution-income-taxpayer-funding-benefits-mortgage-economy-cost-of-living-irs-housing-schools-seattle-olympia-ferguson-legal-challenge-microsoft-boeing
Supreme Court grants emergency hearing for Brian Heywood’s income tax challenge
https://seattlered.com/legal/wa-supreme-court-heywood-tax/4117749
‘Legal Dream Team’ file lawsuit challenging Washington state income tax
https://lynnwoodtimes.com/2026/04/09/income-tax-10/
Washington Supreme Court Fast-Tracks Let’s Go Washington Income Tax Referendum Case
https://www.kvi.com/2026/04/07/washington-supreme-court-fast-tracks-lets-go-washington-income-tax-referendum-case/
WA Supreme Court to consider Let’s Go Washington lawsuit challenging ‘millionaires tax’
https://www.kuow.org/stories/wa-supreme-court-to-consider-let-s-go-washington-lawsuit-challenging-millionaires-tax
WATCH: Fight over WA income tax: group sues to force public vote
https://www.thecentersquare.com/washington/article_939d0a85-cdcd-457e-8949-8ad839dba8bd.html
Heywood asks WA Supreme Court to allow referendum effort on income tax
https://washingtonstatestandard.com/briefs/heywood-asks-wa-supreme-court-to-allow-referendum-effort-on-income-tax/
First lawsuit filed over Washington’s millionaires tax
https://www.fox13seattle.com/news/first-lawsuit-filed-washington-millionaires-tax
Referendum to repeal WA’s ‘millionaires tax’ rejected
https://www.fox13seattle.com/video/fmc-v6jtrca3srgihznk
WATCH: Rejected: WA SOS will not process referendum to repeal income tax law
https://www.thecentersquare.com/washington/article_c8df74c9-d1cd-46a3-8bae-a3a2f2e80c99.html