As I recall, Kerry made a special trip last time DiFi attempted this, to kill the lawsuit reform act. Count on him being there.
Why would you be shocked? About the only vote Senator (cash and) Kerry has made this year was the one to add an amendment to the anti frivolous lawsuit bill. The amendment passed, but with it, the bill did not pass in the Senate. Here's what his official Senate website has to say about his position on your RKBA (which of course he doen't believe you have, except maybe to keep double barrelled shotguns and bear arms afield against the whily Chinese Ringneck.):
Gun Control
Senator Kerry is deeply troubled by the numbers of people - and particularly the number of children - that are wounded or killed by gunfire each year and he supports stricter gun control measures in order to prevent children and adults from misusing any of the approximately 192 million firearms currently in circulation in the United States. He believes that we need to close the gun show loophole, which permits sales at gun shows without a background check, require the provision of a child safety lock on all handguns, and increase controls on assault weapons and handguns.
Gun Safety Locks
Greatly concerned by the numbers of children who are victims of handgun violence every day, Senator Kerry authored the Gun Lock Consumer Protection Act, which requires the Consumer Product Safety Commission (CPSC) to formulate minimum safety standards for gun safety locks and to ensure that only such locks that meet the minimal standard are available for purchase by consumers. The use of gun safety locks is increasing in the United States, but despite the growing use of these locks, they are not subject to any minimal safety standards. The CPSC has participated in the voluntary recall of hundreds of thousands of locks over the past couple of years.