president obbaa and mitt romnny are already throwing some hard punches.and as jim acossaareports, it'snly april. april. --reporter pkg-as follows -- (nats)president obama's visit wwth college students in iowa may have been about financial pid... but it was one more sign that school is in session... in the race for the white house.some of them suggest that students like you help bring down tte deficit. now think about can help bring down the have to pay more so we that students like you have to pay more so we can help pring down the deficit. now the same folks who ran up the deficits for the last decade. the president has been dding re-election homework basically ever sinne he got in office. from february 2009 oo.. he's made by cnn's count... 121 visits to 14 battleground states.is it easier to maae ends meet?no! mitt romney was just in one of those swing states.... new hampshire... toodeclare &pvictory in the republican rac about the economy a&and we're - not stupid.with romney fundraising behind closed days... one of his top surrogates... and potential running mate marco rubio deliver