It is not debatable whether the president can order electronic eavesdropping once Congress has passed a law making it criminal to do so. It is impeachable. The fact that we are sitting in 21st century America debating the issue of presidential power is ridiculous to me.
This could be a big break if Pappas testifies as to why those dogs were used and who ordered the dogs to be used. It's a steppingstone going up the chain of command, and that's positive. It might demonstrate that it wasn't just a few rotten apples.
The President decided that he was no longer running the country as a civilian President. He issued a military order giving himself the power to run the country as a general.