Imagine for a moment that your 32-year-old daughter full of life was shot dead on the streets of San Francisco for absolutely no reason at all.

Just think about that.

That's what happened to Kate Steinle on July 1st.

She was walking with her father enjoying a summer evening when an illegal alien criminal took her life.

Forty-five-year-old Juan Sanchez, a Mexican national, has been charged with Kate's murder and is being held on $5 million bail.

He was also being held by the County of San Francisco before the murder but the sheriff okayed his release despite the fact that Sanchez had seven felonies on his sheet and had been deported five times.

San Francisco authorities knew this and let him go even after ICE asked for a hold on the man.

Why?  Because San Francisco is a sanctuary city and officials there don't give a damn, not a damn about harm caused by alien criminals.

The Steinles are not a political family.  They are not looking for vengeance, but they are absolutely fed up.

BRAD STEINLE, BROTHER OF KATE STEINLE: "It' s been two months since Kate's death,  and the city of San Francisco and the sheriff's department  have done nothing to prevent this from happening to another person.   We feel as though we've exhausted avenues. We're frustrated.  And we're here to make sure change is made, so no one has to endure the pain that my mom and dad and I go through on a daily basis, because the system failed our sister."

Now as you may know, The Factor has proposed a new law that would provide mandatory five-year federal prison terms for any aggravated felon who defies deportation.

That is known as Kate's Law.

There are a number of versions of the law now being debated in Congress.

We strongly suggest that the words aggravated felons be included in the law.

Because if those words are not, the Democrats and President Obama will oppose Kate's Law.

They will hide behind what I called the chamber maid theory, that mean people just want to punish poor illegal aliens.

We all know that's a lie.

The federal government has failed to protect Americans from foreign criminals who prey upon us.

The sanctuary city system is a disgrace.

President Obama has failed to do his duty.  He is sworn to uphold the law of the land.  He does not uphold immigration law.

So it is time for Congress to pass Kate's Law to send a very powerful message.

The Steinle's coming lawsuit claims general negligence and a failure to uphold the law.

In just a few moments our Is It Legal? team will analyze the odds of that lawsuit being successful.

But just the message is worthy.  San Francisco and the people who run it must be held accountable for Kate's death.

They knew Sanchez was a repeat felon.  They let him out of jail anyway.

That is outrageous and should never happen again in this country.

San Francisco must pay a price.

And that's the memo.