If interpreted strictly, the constitution is really not suitable for operating a modern government (e.g. if you interpret the list of powers given to the federal government narrowly) so the supreme court essentially has no choice but to make stuff up.
Obviously once they start doing that there's no real way to control what they are able to modify, but the only real way to fix it would be to completely scrap the current constitution and start from scratch (and be much more explicit about everything including rights and constitutional review). However,the constitution is now seen as something like infallible scripture in the US, plus it's impossible to get everyone to agree on anything, so that would be highly unlikely in the near future even though other to countries have been able to do it.
Obviously once they start doing that there's no real way to control what they are able to modify, but the only real way to fix it would be to completely scrap the current constitution and start from scratch (and be much more explicit about everything including rights and constitutional review). However,the constitution is now seen as something like infallible scripture in the US, plus it's impossible to get everyone to agree on anything, so that would be highly unlikely in the near future even though other to countries have been able to do it.