WILL WEISSERT and ZEKE MILLER 

WASHINGTON (AP) -- President Joe Biden has an election-year message for frustrated voters: At least he's trying.

For those who think the president isn't doing enough to help Ukraine fend off the Russian invasion, Biden announced $800 million in new military support on Thursday.

To ease the pain of high gas prices, he's tapped the Strategic Petroleum Reserve and reopened oil and natural gas leases on public land.

Biden hopes the moves will present a contrast with Republicans — who, he argues, have no solutions.

Still, a new poll by The Associated Press-NORC Center for Public Affairs Research finds just 45% of Americans approve of how Biden is handling the presidency.