"A grand jury in Travis County, Texas, indicted Governor Rick Perry today. Why?"

"For exercising his constitutional prerogative by threatening to veto, and then vetoing, an appropriation to support the public corruption unit in Travis County’s district attorney’s office...."

The Travis County district attorney’s office has long been a cesspool of corruption. It was that office, controlled by the Democratic Party machine, that infamously indicted Tom DeLay for nothing. It took years before DeLay could finally clear his name, and his career was ruined.

ADDED: The quote above is from Power Line. Instapundit writes:

Even many of the Dems on my Twitter feed think this indictment is a reach. But, as with Scott Walker, the Democratic Deep State is trying a spoiling attack aimed at clearing the 2016 field.

But if threatening a veto is indictable, well, how many vetoes has Obama threatened?

"A Texas court has overturned the conviction of former House majority leader Tom DeLay in a money-laundering case...."

Insufficient evidence. 

"I'm sure [Tom DeLay] wishes it didn’t take 6 years of his life, with a cloud hanging over him."

"I am pleased with the outcome. They just took longer than we would have preferred. He said he was gratified and thanked us.”