The head of California's largest union was arrested on Friday, a day after the prominent activist was charged with grand theft and tax fraud. Alma Hernandez, the executive director of SEIU California, and her husband Jose Moscoso were charged on Thursday with allegedly underreporting some $1.4 million of income between the 2014 and 2018 tax years. Another complaint alleged that Hernandez, while working on a political action committee for a Democratic state senate candidate in 2014, approved a $11,700 payment to her husband for services he did not provide.