That gives the 40 or so freedom caucus members an effective veto.

I had no objection to these groups' views being heard, but began to fear they were seeking an effective veto over future events.

This even split has limited its power by giving either political party an effective veto over the actions of the committee.

In most cases each of the young people, and their parents, had an effective veto over any proposed match.

His political influence was considerable: he was consulted on judicial appointments and at times seems to have had an effective veto over candidates he considered unsuitable.