None of Tuesday’s climactic events in Congress will be happening as scheduled. Instead, the pace of Capitol Hill has been slowed considerably by enhanced security, and lawmakers are spending some of their extra time speculating — without many facts to go on — whether the Boston Marathon bombing was an act of domestic or international terror. The central provisions of the bipartisan Senate immigration package were released overnight. But a triumphant news conference with 16 business and labor leaders was put on hold in deference to the bombings, and the first hearing on the bill was put off until Friday. The Senate vote on expanding background checks for gun purchasers has also been postponed, in part because sponsors concluded it would be unseemly to have that roll call a day after the bombings, but mainly because they have not found the 60 votes they need to win. The casualty count now stands at three dead and 176 injured by the two bombs that detonated near the finish line, a dozen seconds apart, the first multi-victim bombing on American soil since 9/11. (more…)