Meanings of blocking efforts in English

The attempted contact and my blocking efforts left me with a chill.

During the past weeks, AOL has tapered off its blocking efforts.

Giuliani has accused Yovanovitch of blocking efforts to persuade Ukraine to investigate the Bidens.

What will it take for Republicans to stop blocking efforts to EndGunViolence?

Giuliani has accused Yovanovitch of blocking efforts to convince Ukraine to investigate the Bidens and suggested she was biased against Trump.

The Syrian government and its allies accuse the opposition and the insurgents of blocking efforts to end the fighting and reach a political deal.

The Giants' tight ends have struggled in their blocking efforts, particularly in short yardage, so trying Brewer in that spot would seem to make sense.