If it is meant to establish what the government stands for, or if it's meant to be a precursor about why we're moving forward with this bill.... They are two different things.
If it's a “whereas” that is the reason we're moving this bill forward in the preamble, then “Whereas the government would like to be committed to assessing and preventing environmental injustice” would be a little clearer to people who are reading it. Right now, I don't think there's anything in the government that says it's committed to any of these things.