2003 Ford Taurus Shaking

At 70 miles an hr or more her front end shakes. There is no visual problem that I nor the mechanic saw. Is there anyone who has had the same problem and were successful at correcting it? You help is greatly appreiciated. Thanks
David

tires need to be balanced, go to a good tire shop, preferably one with a road force balancer.

tires need to be balanced, go to a good tire shop, preferably one with a road force balancer.

Thank You