Wall Street Set to Slip on Oil  LONDON (Reuters) - Wall Street was expected to open lower  on Monday weighed down by worries that Americans will feel the  pinch of steeper energy costs, and Boston Scientific Corp  &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=BSX.N target=/stocks/quickinfo/fullquote"&gt;BSX.N&lt;/A&gt; may dip on news of a product recall.