Key legal question
Whether the complainant had standing to challenge the cantonal tax amendment by constitutional complaint.
Extracted holding
He lacked standing because he was neither subject to the cantonal tax law nor virtually affected by it; he relied only on general public interests in tax competition.
Extracted reasoning
A challenge to a cantonal tax statute requires direct or at least virtual interference with the complainant's legally protected interests. A person outside the canton and not subject to its limited tax jurisdiction is not virtually affected, absent exceptional circumstances.