Can I use "to inquire" with an indirect object and does its meaning change in this following sense, to ask information, whether I use "as to/ about" because the prepositions used with it change its meaning. I wonder if there is a difference between simply "to inquire" and " inquire about" in American English especially?
The CEO inquired the account manager (as to/about) why there is a deficit in the annual budget at the end of the year. However, because he could not get a good answer, he appointed a committee in order to inquire into the records.
In case the product you bought have not arrive in a time that it should have so you tell your friend:
I will inquire Amazon as to whether they will able send the products before new year.
May I inquire (as to) why you need this information?
I read an useful thread on ELU so I know prepositions used with it changes its meaning besides it can have different uses in different countries.