In clearing the area so quickly, authorities acted on lessons learned from past terrorist attacks such as the Oklahoma City bombing in 1995, the Atlanta Olympics bombing in 1996 and the September 11, 2001, attacks, according to security experts.

CNN: Past bombings prepared response in Boston

Republican leaders were hoping to push the budget through Congress this week, clearing the way for the Senate to quickly draft the tax legislation.

BBC: $1,350bn US tax cut deal

Are they clearing -- those nominations cleared through the committee as quickly as they should?

WHITEHOUSE: Press Briefing

Without practical, hands-on review of how we intend to use the identifier for the business of making global decisions on the riskiness of trades, positions, clearing arrangements, net stable funding ratios and counterparty exposures the good data efforts led by the US will quickly become irrelevant.

FORBES: "Global" Bank Regulation -- Stranded in the U.S.?