Why Mother Teresa is still no saint to many of her critics

This post has been updated. It was previously posted in December 2015. 

This Sunday, Mother Teresa will become a saint. The late Roman Catholic missionary who became an international icon for her charitable work will be canonized, the Catholic Church's highest honor, on Sept. 4.

For Mother Teresa’s many fans — most of whom had viewed her canonization as inevitable and perhaps even overdue — the day will no doubt be filled with celebration. However, it will probably also bring new fuel to the difficult and sometimes bitter debate about the merits of Teresa’s charitable work and the nature of her legacy.