Last Tuesday, Puerto Rico sold its much-ballyhooed $3.5 billion in non-investment grade general obligation bonds. Two days later, two legislators in Puerto Rico’s Senate filed a bill which, if enacted, would permit insolvency filings by Puerto Rico’s public corporations in Puerto Rico’s territorial trial court. The juxtaposition of the two events has some bond investors crying foul.

The U.S. Court of Appeals for the Second Circuit has upheld a bankruptcy court’s decision enforcing indenture language providing for the automatic acceleration, without make-whole premium, of secured American Airline, Inc.

A recent ruling in the American Airlines bankruptcy case enforcing an automatic acceleration upon bankruptcy provision serves as a reminder that the enforceability of so-called ipso facto provisions in debt instruments remains an unsettled, forum-dependent question.