Looks like it's the American Catholic church that's allowing it:
http://www.sspx.ca/Angelus/1980_September/Search_of_Tradition.htm
As this issue of THE ANGELUS goes to press, Archbishop John Quinn, President of the National Council of Catholic Bishops, has just announced that several Episcopalian ministers seeking to convert to Catholicism will be allowed to do so and remain in their married state. This unprecedented change in Roman Church tradition came as a shock to Catholics and Episcopalians, alike!
Prompted by the fact that the U.S. Episcopal Church now ordains women priests, at least 65 ministers have sought to become Roman Catholic priests. Of these 65, many are married and according to Archbishop Quinn can remain so. Although not very clearly detailed as yet, the ministers will come into the Church on a case-by-case basis with the final approval resting with the Vatican.