What do you think of President Trump's charge that the previous administration abused their authority and spied on his campaign?

Don't know if it happened or not so, we are dealing with a hypothetical until more information is provided.

What I would like to know is your position on these three points.

1. Do you think the charge has a kernel of truth? Why or why not.

2. If it is true, what do you think should happen? Politically and legally?

3. If it's not true, what do you think should happen?

As a bonus please provide any sources for updates containing facts about this topic.

Thanks,