Student or Learner
Wire Health & Science - Analysis: Vaccine-autism link unproven - sacbee.com
This week, government officials said they have agreed to pay the Polings from a federal fund that compensates people injured by vaccines.
(is the above sentence correct? I think "have agreed" should be changed to "had to")
Today is my birthday. We had plans today.
(the above is from another article. Why "had" is used instead of "have"?)
In the first sentence "have agreed" is right and the sentence is correct. If you used "had to" it would mean they had no choice but to agree - even if this were true the officials wouldn't want to say that.
As for your second sentence without context I cannot be certain, but the use of had here suggests that the plans have been changed for some reason.