come into question

:  to move toward something :  approach

:  to move or journey to a vicinity with a specified purpose

:  to reach a particular station in a series

:  an interrogative expression often used to test knowledge

:  an interrogative sentence or clause

:  a subject or aspect in dispute or open for discussion :  issue

:  to ask a question of or about

:  to interrogate intensively :  cross-examine

:  doubt, dispute