A tribunal of this state may enforce a child-support order of another state registered for purposes of modification, in the same manner as if the order had been issued by a tribunal of this state, but the registered support order may be modified only if the requirements of Section 5700.611 or 5700.613 have been met.
Source:
Section 5700.610, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=FAM§ionNum=5700.610..