In this case, that's true. But his/her question was: "but why/how does money affect creation of laws in the US?" The ruling allowed corporations to fund candi

In this case, that's true. But his/her question was: "but why/how does money affect creation of laws in the US?" The ruling allowed corporations to fund candidates in any candidate election. These candidates then have a better chance of winning (though certainly not guaranteed) through sources of funding that they hadn't had before. By influencing who gets elected, corporations have a better chance of influencing which bills are created and passed.