Are these things becoming more common, or was it always like this and no one cared until recently?
This seems to be more common for injection based methods. But Harry, Ole Sparky had plenty of flaws, it just wasn't covered in the 24 hour news cycle since it didn't exist back in the days of the chair.
Foreign providers of the the poisons (?) that go into the cocktails, often EU-based, have increasingly refused to provide them to US prison authorities due to their opposition to capital punishment, resulting in an increase in the usage of ersatz combinations that have unpredictable results.
