Canes,
Several big mistakes in recent games obviously.
My first reaction is that the WC needs to be "Americanized" by instituting US rules for electronic review.
But on second thought, we have to try think about the other countries who may not feel the same way about instituting these changes.
We (in the US) may be extremely indignant about the injustice associated with these obvious errors, but the rest of the world may be more comfortable living with injustice.
Add to this possible cultural issue the issue of the long, unchanging history of soccer around the world, and you can start to understand the massive momentum that needs to be overcome.
Having said all this, a reasonable first step that would be acceptable to anyone (I would think) is using electronic means to verify a goal.