calling in question

The calling in question of the actions and policies of government led to a new climate of debate.

His work is distinguished by an abstract quality, which seems to express a state of uncertainty and inconsistency, calling in question the viewer's own preconceived certainties.

Mr. King's program, which is normally broadcast live with viewers calling in questions, was taped in advance at the insistence of the White House.

And finally we would come to Finnegans Wake, apparently mocking our very attempt to read by calling in question what is, I suppose, the most basic of all assumptions about writing, that whatever form it takes it will be made up essentially of recognisable words.