Burger King v Rudzewicz

Your opposing counsels have signed forum
selection clauses in a state, so they have
purposefully availed themselves to that state's
laws. All opponents have 4 contacts in 1 state of
your choice.
. . . prior negotiations, contemplated
future consequences, the terms of the contract, and
the parties' actual course of dealing must be evaluated
in determining whether the defendant purposefully established minimum contacts within
the forum. - William Brennan