An Iowa Senate panel on Monday advanced a $250 million property tax cut for businesses, with a stern warning by Democrats that they won't permit Republican Gov. Terry Branstad to cram his tax plan "down our throats," The Des Moines Register reported. A three-member subcommittee approved Senate Study Bill 1135, sending it to the full Senate Ways and Means Committee. Sen. Matt McCoy, D-Des Moines, predicted the full Senate will eventually approve the bill, setting up a showdown with Branstad, who has proposed a $400 million package aimed at reducing tax bills on business properties and limiting annual increases for all property classes.