I suspect you will be hearing it frequently in reference to the pending lawsuits against the Department of Health and Human Services in response to its contraception/sterilization/abortion-inducing drug mandate that erodes religious liberty in the United States:
A mandate to purchase a particular product would be unconstitutional if, for example, the edict impermissibly abridged the freedom of speech, interfered with the free exercise of religion, or infringed on a liberty interest protected by the Due Process Clause.