Air Date: Apr 17, 2013 12:00 AM ET
The Boston bombings may trigger an increase in security at future marathons..but is there a limit to the security measures we'll accept?
Top News Headlines
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- U.S. says softwood lumber imports don't play by rules, but Canada replies: See you in court
- Rent control will probably help Ontario's unpopular premier. Renters? Not so much: Neil Macdonald
Welcome to the National, the flagship nightly newscast of CBC News, hosted by Peter Mansbridge.