if you've missed any interviews, i want you to go to the brooke blog, as we call it. and to boston, thanks for having us. this is a tough town. boston strong. now to jake tapper. "the lead" starts now. on the heels of our reporting earlier this week about the problems with information sharing, the department of homeland security resolves to close a glaring loophole in border defense. i'm jake tapper and this is "the lead." the national lead, dzhokhar tsarnaev's arrested pal, allowed back in the country on a visa that should have been revoked. now the agents who should have stopped him have new marching orders from the top. the sports lead. the biggest spectator event since the boston terror attacks. more than 160,000 people will attend the kentucky derby tomorrow. is churchill downs ready?