Video: Graffiti damage at San Xavier Mission
Vandalism is under investigation by the Tohono O'odham Police Department.
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The Rev. Edward Sarrazin says church has withstood far bigger challenges.
AHCCCS officials say an updated study is in the works.
"If it weren't for him, I don't think people would know who we are today," says Jacelle Ramon-Sauberan, a UA grad student.
