  Usually, the Bloch-Nordsieck theorem is expected to be violated in weak
interactions, as the corresponding asymptotic states are not weak singlets.
However, a manifest gauge-invariant approach replaces the asymptotic states
with composite states, and thereby restores the Bloch- Nordsieck theorem. The
Froehlich-Morchio-Strocchi mechanism ensures that this is in agreement with
existing phenomenology. We outline the necessary steps of this construction.
