In a shot at ActBlue, the left’s major online donation platform, President Donald Trump plans to sign a presidential memorandum on Thursday cracking down on foreign contributions in American elections, according to a person familiar with the policy and granted anonymity to discuss not-yet-public details. Attorney General Pam Bondi’s office is expected to be involved in the crackdown, the person said, though further details about the mechanism she will use were not immediately available. The order is expected to specifically target ActBlue, which Republicans have long claimed could be exploited by foreign actors. Democrats had been bracing in recent days...