Government corruption and the Church

Evangelical Lutheran Church of Tanzania Bishop Thomas Laizer speaks out against corruption in government.

Speaking out is one thing. But should the Church do more than just talk? Should the Church be willing to "name names"? Support candidates running for office? Take political positions for/against certain government programs? The Church risks being seen as a partisan in that case.

One problem I have with religious leaders taking some vague stand against corruption is that it amounts to picking low-hanging fruit. Pretty easy, since no one will openly defend graft and theft. Yet on issues such as the massive debt that the USA is running up I have heard very little that is meaningful from religious leaders. Surely spending mind-boggling amounts of money that our children/grandchildren/great-grandchildren will have to pay back is a cruel form of theft much worse than any petty bureaucrat who finds tax money sticking to his/her hands. Why the relative quiet from religious leaders on the US debt?