The Arizona Senate has approved a second Republican-sponsored bill targeting government employee unions.

The bill approved Tuesday on a 18-11 vote now goes to the House.

It generally bars using tax dollars to pay for workers' union activities. But the bill was changed Tuesday to exclude police unions from the ban except that their members still could not be paid by a government for union recruitment and conventions.

The Senate previously approved a bill to bar paycheck withholding for unions and other entities without annual reauthorizations by the workers.

Two other bills on unions await Senate action. One of those would ban collective bargaining with public employee unions. The second would bar using government workers' paychecks to collect union dues.