(August 10, 2020, 10:39 AM EDT) -- PALO ALTO, Calif. — Four tobacco shop owners claim in a lawsuit filed July 28 in California state court that the City of Palo Alto's new ordinance banning all flavored tobacco and e-cigarette products violates the U.S. and California constitutions and will force three of them to close down their businesses permanently after the ordinance takes effect on Sept. 1 (David Zoumut, et al. v. City of Palo Alto, et al., No. 20CV368790, Calif. Super., Santa Clara Co.)....