I support this bill also, just to consisen (is that a word?) matters.
No, but consisten is.
Maybe he means Concisen as in concise.
In that case, that isn't a word.
Concisen is an English word, built using the usual rules for suffixes, albeit one that probably isn't in any dictionary except perhaps the OED. Given that
shorten and its large number of synonyms are existing verbs that already express the concept and are in common use, I can't say that I am surprised by the lack of the perfectly valid word, concisen, in either common use or the dictionary.