That vs Which
If removing the clause changes the meaning of the sentence, use "that".
Honeydew that is ripe is actually pretty delicious.
The phrase "that is ripe" is a restrictive clause because if you take it out, the sentence becomes crazy talk. Nobody like honeydew.
If the clause is simply providing extra information and taking it out doesn't change the meaning of the sentence, use "which".
Honeydew, which has been called the Ringo Starr of the melon kingdom, is the only fruit still available.
The phrase "which has been called the Ringo Starr of the melon kingdom" is a nonrestrictive clause because removing it doesn't change the meaning of the sentence. Also, note that the proper way to punctuate a nonrestrictive clause is to separate it from the rest of the sentence with commas (or parentheses).
When drafting legislation, the vast majority of clauses are essential, which means that you must take care not to punctuate the sentence incorrectly with commas, or use the word "which" when you mean "that".
From the 2012 edition of the Illinois Bill Drafting Manual:
From the Utah Drafting Manual:
Often, in legislative drafting, the nonrestrictive clause is not useful and should not be included.
Oh, but check out the style guide put out by the Uniform Laws Commission, Rule 206 (c ) and (d)!
(c ) Use “that” to introduce a restrictive clause that is intended to modify the nearer of two possible antecedents.
Example: An application to renew a license that has been revoked must be accompanied by a certificate of good standing.
(d) Use “which” to introduce a restrictive clause that is intended to modify the remote, rather than the nearer, of two possible antecedents.
Example: An application to renew a license which has been rejected may be resubmitted not later than 30 days after rejection.
In this example, the antecedent is “application”, not “license”.
It turns out that, in very specific instances, “which” can be used to introduce a restrictive clause, especially in uniform laws. It is used when referring to a distant antecedent.
This is an obscure rule that could make a huge difference to a court construing a statute. Drafters especially need to be aware of its potential effect on statutory construction.












