I’m not sure where you get your info., but on the (L) site itself (http://www.lp.org/platform). And that sure isn’t ‘radical’ to me:
3.4 Free Trade and Migration
We support the removal of governmental impediments to free trade. Political freedom and escape from tyranny demand that individuals not be unreasonably constrained by government in the crossing of political boundaries. Economic freedom demands the unrestricted movement of human as well as financial capital across national borders. However, we support control over the entry into our country of foreign nationals who pose a credible threat to security, health or property.
I never said their platform was 100% *me*, but it sure is 90+%
You are looking at the shortened version of your immigration platform there, post 116 gives the same, but more fleshed out version that they used to use, 116 is from 2004.
If you read them, you see that nothing was changed.