a) "has" is OK because they're talking about the recent past, and the measures are still current and relevant. "had" is also OK. " b) It's the same deal: "is" is OK because the advice is still current and relevant.
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AbilOne more question: do you think the sentence would sound less odd if one were to replace the words "pointed finger to" with the word "considered" or "termed"?"pointed finger to" doesn't merely sound odd, it sounds plain wrong. After the necessary corrections, I don't think "pointed the finger at" sounds odd. OK, it sounds like journalese, but it is a news