The phrase "am I to question" is correct and usable in written English.
It can be used when expressing uncertainty or seeking clarification about whether one should question something or someone.
Example: "Am I to question the validity of the information presented in the report?"
Alternatives: "Should I question" or "Am I supposed to doubt".
Who am I to question their view?
Hey, if it gets you seven bedrooms and three baths in Park Slope, who am I to question it?
That said, he has somehow gained the ability to survive clearly fatal helicopter crashes that occur in the wake of enormous nuclear explosions, so who am I to question his legitimacy?
"Who am I to question the second Liberator of the Republic, the messiah God sent to save the people?"But at separate meetings this month, three of the more important among the score of parties that support the president declined, at least for now, to join the new outfit.
Who am I to question the caprices of life?" She decided to proceed with her tour, but the Latin Grammys in Los Angeles -- which she will attend with her two-month-old son, Antonio -- will be her first public appearance since May.
I don't remember reading anything in the Bible about anal beads or rubber ticklers for instance, but then theologians have always been adept at interpreting the text to fit their arguments, so if the vicar says they're okay then who am I to question otherwise?
"If I ever questioned the teachings and processes by others, I was told, who was I to question others who were far smarter than I?
We should have realized it earlier, but who was I to question Tyler?
On the map, Mount Rushmore was approximately 2 inches from our starting point, but who was I to question her calculations?
VON EICHBORN: How am I to understand this question?
I am starting to question everything we did in 2013.
