Big excitement for US Municipals as Vallejo, California, intends to enter bankruptcy:

The city council’s unanimous decision makes the San Francisco suburb the largest city in California to file for bankruptcy and the first local government in the state to seek protection from creditors because it ran out of money amid the worst housing slump in the U.S. in 26 years.

The city of 117,000 is facing ballooning labor costs and declining housing-related tax revenue that have left it near insolvency. The city expects a $16 million deficit for the coming fiscal year that starts July 1. Under bankruptcy protection, city services would keep running. It would freeze all creditor claims while officials devise a plan for emerging from bankruptcy.
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The area has been one of the hardest hit in Northern California by the housing market slump. Home prices in Solano County, where the town resides, dropped 19 percent in January from the year before, according to DataQuick Information Systems, a firm which tracks real-estate markets in the state.

This ties in nicely with the report from Accrued Interest that MCDX has commenced trading:

From the people who brought you the ABX, now comes the MCDX, a basket of municipal credit default swaps (CDS). The index will begin trading on May 6 with three, five, and ten year tenors. Markit set the coupon for the MCDX last Thursday night at 35, 35, and 40bps respectively. It started trading today, and traded wider, closing at 42bps for the 5yr tenor and 48bps for the 10-year.

This is a potential game changer in the municipal market. First, we’ll go over what the MCDX is, and then how it might change municipals forever.

The MCDX is going to be very similar to the CDX or ABX indices currently trading. It will represent a basket of 50 equally weighted municipal CDS. You can see the list of credits here. These will be recognized by municipal traders as more or less the 50 largest regular issuers of bonds. There are a few AAA credits in there, but mostly AA and A-rated credits. If rated on Moody’s Global Scale, the one where Moody’s attempts to match muni ratings with corporate ratings, almost all of these issues would be AAA.
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buyer of protection on the MCDX has essentially bought equal amounts of protection on the 50 names in the index. So a $10 million notional trade in the MCDX is de facto $200,000 in protection on each of the 50 names. Should any of the names default, the buyer of protection would deliver an eligible obligation of the issuer to the seller of protection at par. Markit has provided a list of CUSIPs as examples of eligible obligations. Any bond which is pari passu with the listed CUSIP would be eligible.
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To date, trading in municipal CDS has been very light, and with good reason. Default rates of general obligation and essential service municipals are almost non-existent. There is a limited number of large and frequent issuers outside of these two categories. So demand from hedgers for specific names is light. There might be demand from speculators who want to bet on the contagion hitting munis. But such a buyer would prefer to make a generalized bet on municipal credit as opposed to picking out individual credits.

To me, this product sounds like just another speculative recipe for disaster.

In the first place, consider the theoretical underpinnings of the CDS market: if I buy a 5-year corporate for cash and then buy credit protection for it, then what I’ve got - to a first approximation, ignoring liquidity effects - is 5-year bank paper.

If I buy 5-year bank paper and sell credit protection, then I’ve got - first approximation - full exposure to the corporate bond.

But there are tax effects with munis, since their coupons are not taxable, which is why (in normal times) they trade through Treasuries. Buying bank paper and selling municipal credit protection means I have to worry about tax effects and cash flow differences.