Headlined, "Obama may act on tax inversions without waiting for agreement from Congress - Law from 1969 could be used to tackle issue, says Harvard Law School professor," the item expands on that theme. Detail there is for the reader to examine.
Bloomberg riffs the same theme, but sounding it quite differently, their item headlined, "Obama Wants Tax-Avoiding Companies to Pay Up, Starting Yesterday."
So far it has been bully pulpit per Teddy Roosevelt's penchant, more than executive orders which peaked in usage under George W. Bush.
A simple Google = inversions Obama Republicans
yields an extended hit parade.