\
    Returns if the origin is Mexico.

    `origin`
        The origin to check.

def origin_mexico(origin):
    """\
    Returns if the origin is Mexico.

    `origin`
        The origin to check.
    """
    return origin in (u'CIUDADJUAREZ', u'GUADALAJARA', u'HERMOSILLO',
                      u'MATAMOROS', u'MERIDA', u'MEXICO', u'MONTERREY',
                      u'NOGALES',
                      u'NUEVOLAREDO', u'TIJUANA')