Mayor Michelle Wu “expects to pay” up to $650,000 to prepare for tomorrow’s congressional hearing on sanctuary cities, the mayor’s office told the Herald.

She has held roughly a dozen prep sessions and hired outside counsel at $950/hour to gear up for a hearing Wednesday that is both a minefield and a potential political opportunity.

Boston Mayor Michelle Wu is preparing for a trip to Washington, D.C., this week, where she'll be challenged to defend the city's policy on not cooperating with federal immigration enforcement actions while facing criticism and the threat of funding cuts.