I'm not an expert on anything except philosophy, but I have written a lot of stories on the housing crisis, which is why I feel confident using that as an example.
But as I pointed out in my article on opioids that I referenced I did find it bizarre that I was getting spam about how easy it would be to buy carfentanil and other drugs on line and then have them sent to me. There were even on-line chats to work customers through the process and a delivery guarantee. It seems to me that sort of brazen behaviour suggests that it is far to easy to hide behind an international border. I've also done stories about money laundering (which incidentally has an impact on the cost of housing) and tax evasion. Both of those involve hiding data behind borders.
And recently there was an operation in France that involved sharing information across many borders to break up international organized crime syndicates. (One delightful group of individuals was sharing videos of them grinding up victims and dumping the paste into a river.) If memory serves, part of this involved the French police arresting and threatening the founder of Telegram with long time in prison if he didn't let them access his servers---which he did.
Another example that comes to my mind is how countries are going to get sleazes like Mark Zuckerberg under control if we can't create international treaties that force companies like Meta to disclose information. I'd love to see the internal correspondence at Meta around things they did like the Cambridge Analytica manipulation of the Brexit campaign. (I wrote a story about that and was absolute aghast about what they did.) I'd also like to see more info about the genocide they helped create in Burma.
I know people are afraid of authoritarian governments. But the opportunity cost of over-doing protecting ourselves from stuff like this is it ties the government's hands when it comes to building international laws around protecting people from criminals, tax evasion, and sleazy tech-lords.
Are you a specialist with specific information that causes your concern? Again, what I read says that there will be a warrant required from a judge plus a ministerial sign-off. Are you opposed to any search warrants at all? Or just in this specific case? Do you not trust any elected officials? If so, why do you think such untrustworthy people would be bothered to follow the existing laws. I really want to parse out whether these concerns are based on real, substantive issues or just a vague 'they're all bastards' feelings. I notice this with regard to the housing crisis, where people simply don't want to admit that there is a supply problem and blame everything on greedy landlords. They do that because they don't want to admit that the equity on their homes is based on sweating it out of young people. (I have lots of arguments with my fellow boomers who don't want higher density housing in their neighbourhoods.