His response was fairly short. However, I learnt something I didn't know -- the FSF CLA actually requires that the FSF will always maintain your contributions under a copyleft license. They also provide recommendations on how to make contributions to projects that require CLAs (such as negotiating similar terms for the project).

Here's the complete contents of his email:

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[[[ To any NSA and FBI agents reading my email: please consider ]]]

[[[ whether defending the US Constitution against all enemies, ]]]

[[[ foreign or domestic, requires you to follow Snowden's example. ]]]

This doesn't change my views on the general issue of assigning copyright to free software projects, which I stated in http://gnu.org/philosophy/assigning-copyright.html. There are sometimes good reasons for license changes.

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