for extrapolating that he cannot subpoena him to testify in front of the grand jury. that is not the case. certainly if you ask any legal scholar about that issue, that hasn t been taken to the supreme court either. the question of whether or not a sitting question can be subpoenaed for testimony. of course, we have the nixon precedent but that referred to tapes. documents and tapes. by all accounts, the supreme court said a sitting president is not above the law and seems that they would follow suit when your talking about testimony. it s true that that specific instance hasn t been tested. we saw in the clinton case, he voluntarily testified before the grand jury. ken star did issue a subpoena but it was retracted. shepard: there s new reporting tonight on michael cohen, the president s fixer and one-time lawyer. you ve said more than once on this program, caroline, that it s the work of the southern