  I wrote this column for the new Newsweek on the Scotus
decision last week to hear the McCutcheon case, which gives them
a chance to invalidate Buckley v. Valeo contribution limits. For
some reason pieces written for Newsweek don't always land on
this blog, so for those of you who still visit me the old-
fashioned way I wanted to make sure you saw it.  Money grafs:
Why do [contribution] limits exist? Here we go back 37 years to
Buckley v. Valeo, the seminal Supreme Court decision in this
area. Even if you follow this stuff only casually, you probably
know that candidates and parties can spend as much as they want;
that “spending is speech,” as it’s sometimes said in the trade.
That was from Buckley. But Buckley also upheld limits on how
much any single individual could contribute to a candidate on
the grounds that excessive contributions from one person could
lead to “corruption or its appearance.”  So the court that flung
the doors wide open to corporate spending in Citizens United is
now going to have a go