Gov. Deval Patrick is asking lawmakers to approve a change in a transportation finance bill that would allow an increase in the state gasoline tax if tolls are removed from the western portion of the Massachusetts Turnpike.

But the governor's proposed amendment was immediately rejected Tuesday by legislative leaders.

The bill on the governor's desk promises $800 million in new annual revenues for transportation within five years. But the administration contends that the legislation fails to account for revenue lost if tolls west of Interstate 95 are eliminated as scheduled on Jan. 1, 2017.

If lawmakers do not act to keep the tolls, Patrick's proposed amendment would authorize the state's revenue commissioner to adjust the gasoline tax to offset the anticipated loss of revenue.

And Governor Patrick says he is reviewing a proposal to require photo identification on electronic benefit transfer cards used by welfare recipients.

The governor would not immediately say if he would allow the measure to become law. The Legislature added the provision to a spending bill that reached Patrick's desk on Monday.

The governor told reporters on Tuesday that he would prefer a more comprehensive approach to welfare reform, along the lines of a bill that has passed the Senate and is pending in the House. He had also said his office has received messages from people concerned about the cost of requiring photo IDs on EBT cards, and the possible impact on seniors and the disabled.

Patrick says he expects "significant" changes in the welfare system in the coming months.