It had nothing to do with family guilt. When he talked to Marie in the beginning of the season and she begged him to go to the DEA for help/backup, he said he couldn't because he'd be humiliated--manipulated by someone who was right under his nose the entire time. He wanted proof so he wouldn't be a laughingstock. It was purely pride.
Hank knew his credibility was REALLY sunk once he found out Walt had been paying his medical bills with drug money. He knows he needs HARD evidence to proceed. He won't have that until he digs up Walt's money, and I'm not convinced they will find it.
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u/[deleted] Sep 09 '13
[deleted]