Gambling is a real danger and mindfully,no religious organization would like to promote it because it's sinfull and harmful according to scriptural references/examples.Whether Religious leaders should carry out responsibilities about social policy and regulations varies depending on the nature and government of the country.
Gambling, as we're preaching it to be, is actually different from what it is; the moment the word "gambling" is mentioned, the first thing that comes to our mind is financial ruin, and that isn't what gambling was initially created for and I think with time people won't even see it as a form of entertainment again and this is why people now see the need to treat it as something that looks like an unlawful practice in the country meanwhile it's not...
I have never been a fan of religion being used as the basis of making a law, preach to your followers let them know what is good and what is not good and let those who doesn't believe in your preaching leave the way they want until they finally see the truth in your teaching and your making it into a law in the country is no different from saying "let us kill them for not worshipping our god".