Last complete load was very wet. No water left in tub. The Next load washed normally up to drain cycle. The tub partially drained & then stopped.
The tub will still fill normally, but will not start wash cycle. I Can manually rotate agitator. Also, I just saw for the first time that the washing machine is leaking. It appeared after the tub was left full for about an hour.
Could a clogged pump cause this?

There's a good chance that there is some lint stuck in the drain hose.

I edited my original question. After a response. I just noticed that the washer is leaking.
It does not agitate, even though I can manually turn the agaitator.
Could the full tub, & not spinninng be caused by a clogged pump?

Yes.

I found the problem. Some garment got caught in the pump.
Using the following link, I removed the cover to inspect the water hoses;
how to access a direct drive washer, pump repair, motor repair, replacing the motor coupler, intalling the cabinate, removing the cabinate, Whirlpool, Inlgis, Kenmore, washers (http://www.applianceaid.com/procedures.html#pump)
2) the "garment" was wrapped around the fins of the pump. I could see it, so I wrapped the elastic around my needle nose pliers & turned ir. The eventually elastic broke.
3) Removed the pump using the above directions. Cut one of the elastic begun to turn it again. Used a lug wrench to turn the pump blade.
3) Voilà! It's cleared.
4) Put it all back together & it works just fine.

I am concerned that using a lug wrench to turn the pump blade. Might have damaged the plastic connector to the end of the motor. Okay, it should not have that much stress on it, but If I'm wrong & it causes a problem later, I will probably just by another pump.

BTW;
Whirlpool has a parts list for this a many other appliances on their web site. It was instrumental for me to disassemble/reassemble the washer.

Thanks to all.