  We study the production of the Higgs in a association with a vector ($V=W,Z$)
via the VBF process, VBF-VH. In the Standard Model (SM), this process exhibits
tree-level destructive interference between between $W$ and $Z$ mediated
processes and is thus very sensitive to deviations in Higgs couplings to vector
bosons. We study this process at both the HL-LHC as well as future high energy
lepton colliders. We show in particular that the scenario where Higgs couplings
have the same magnitude but opposite relative sign as in the SM, a scenario
that is very difficult to distinguish without interference, can be probed with
this process at either collider.
