What happens when the president makes a recess appointment when the Senate is not technically on recess? Nobody knows. But President Barack Obama’s decision to jam the Senate and install three labor nominees and a consumer watchdog without a confirmation vote raises unsettled legal questions that could have a long-lasting impact past his presidency. “This is not a nice, clear-cut area at all,” said Robert Dove, a former Senate parliamentarian, when asked about the implications of the president’s move. Legal experts said Wednesday that there was no precedent for such recess appointments and that it would likely be put to...