Higgs Production in $SU(2{)}_c$ Symmetric Interactions

We study the sensitivity of Higgs production and decay processes to the $SU(2{)}_c$ symmetric couplings $O_W$ and $O_{UW}$. Remarkable results are obtained in the case of $\gamma \gamma \to H$ and for certain ratios of Higgs decay widths. We also discuss and complete previous results on unitarity constraints for such couplings.