"Does the article blame Trump?"

No, the article doesn't *explicitly* blame anyone.  What the article does do, however, is mention a statistic then make a half dozen references to Trump:

-were rejected after border agents questioned their views on Mr. Trump
-was turned away along with a suburban Montreal woman who was quizzed about Mr. Trump 
-The guard even suggested she may feel she had been “Trumped”
-The U.S. border guard union was one of the few to endorse Mr. Trump

And the tone and structure of the article is such that it is leading readers to infer that the two are linked (ie: Trump is the cause).  In my opinion, this is WORSE than had they blamed him because the result is the same (people blame Trump for Obama administration numbers) but the article/writer/paper can blame dodge responsibility.  Almost like they know what they're doing... hmmm