this they've called on congress to change the laws. it is true if someone comes from a country that's not mexico or canada they're entitled to a hearing and the log system is long. immigration judges and ice agents to do their jobs of enforcing these things. they've called on the enforcement of tougher requirements for proving that you are an asylum seeker. it is important to note the people in the caravan will have to prove whether they're being persecuted. lying on an asylum application is also a crime. a lot of legal implications here. >> sandra: this isn't the first of the caravans we've seen. we've seen several others in recent years approach the u.s. border in a similar way. this time is different, right? the president has been tweeting about this and he has brought an extraordinary amount of attention to this particular caravan. >> it is different because he has pressured mexico to handle it. the caravan is in tijuana being