The subject of an embedded finite clause in Mongolian can be marked with accusative case, alternating with canonical nominative case. Following previous proposals, I analyze this option as the consequence of the presence of 'φ'-features in the complementizer of the embedded clause, which trigger the movement of the lower subject to Spec-CP. From that position, the embedded subject is accessible to the matrix v, which assigns case to it without violating the Phase Impenetrability Condition (PIC). A prediction that falls out from this analysis is that the accusative subject in Mongolian can move into the matrix clause, also without violating this locality condition. This type of construction is called 'hyperraising' and is indeed found in the...