The interview with Gates was given with a German newspaper which in context appears to involve  foreign aid and a need for other countries to do more in that respect. The extraction and translation was by Breitbart a right wing organ How that has been extracted, presented and 'churned' by other right wing media is their decision  .

Here is Gates on camera  talking about immigration. The topic appears at the end of the clip

https://m.youtube.com/watch?v=LFk-F6ds8Gw 

Here is the piece on immigration  from the clip itself  talking about refugees from areas like Syria and Afghanistan etc.

Gates comments 

' Well certainly  the US should set a better example by taking in more refugees, we have the capacity , even though it's not easy,  I think Germany and Sweden should be congratulated for being more of an open door approach on this thing '

Gates has appeared before Congress arguing for flexible approach to h1b visa applicants and a need to import more immigrants infact unlimited on h1b when he went before Congress

Zucherberg CEO of Facebook has said similar and goes further  on  immigration 

my italics, and bold