
"at the heart" doesn't fit.

how to say something like: "becomes effectiive"?

I would suggest something like.
"Before the decision takes effect" or "becomes effective" as you suggest.
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License: CC BY 2.0 FRlo vreji be lo citri
This sentence was initially added as a translation of sentence #3362355
se jmina la'o zoi.neron.zoi, July 6, 2014
gau la'o zoi.neron.zoi se jorne, July 6, 2014
gau la'o zoi.neron.zoi se jorne, July 6, 2014
se stika la'o zoi.neron.zoi, July 6, 2014