Facing a “professional death penalty,” Miami attorney Carlos Loumiet took the witness stand Monday to defend his legal work for defunct Hamilton Bank, but he repeatedly said he couldn’t recall details or wasn’t qualified to answer many of the questions posed to him by a government lawyer.

Loumiet is accused by banking regulators of helping the convicted former executives of Hamilton Bank conceal their fraud, which led to the implosion of the Miami-based institution and cost taxpayers more than $127 million and shareholders their entire investment.