Complex sentence: Measures similar to SB1070 had been passed by the legislature several times before, only to be vetoed by Democratic Governor Janet Napolitano, who subsequently was elevated to Secretary of Homeland Security in the Obama administration and was replaced by Republican Secretary of State of Arizona Jan Brewer.
Split into simpler sentences: Measures similar to SB 1070 had been passed by the legislature several times before, only to be vetoed by Democratic Governor Janet Napolitano. She was subsequently elevated to Secretary of Homeland Security in the Obama administration and was replaced by Republican Secretary of State of Arizona Jan Brewer.